Home / 3,178.20-4,386.03-1,851.69

Finding the Fourth Proportional to 3,178.20, 4,386.03 and 1,851.69

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Solution

The fourth proportional to 3,178.20, 4,386.03 and 1,851.69 is: 2,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.20 : 4,386.03 = 1,851.69 : x
  2. Step 2: Convert to fraction form
    3,178.20/4,386.03 = 1,851.69/x
  3. Step 3: Cross multiply
    3,178.20x = 4,386.03 × 1,851.69
  4. Step 4: Simplify right side
    3,178.20x = 8,121,567.89
  5. Step 5: Solve for x
    x = 8,121,567.89/3,178.20
  6. Step 6: Final answer
    x = 2,555.40

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,179.20, 4,387.41 and 1,852.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.