Home / 3,178.69-4,386.72-1,852.18

Finding the Fourth Proportional to 3,178.69, 4,386.72 and 1,852.18

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Solution

The fourth proportional to 3,178.69, 4,386.72 and 1,852.18 is: 2,556.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.69 : 4,386.72 = 1,852.18 : x
  2. Step 2: Convert to fraction form
    3,178.69/4,386.72 = 1,852.18/x
  3. Step 3: Cross multiply
    3,178.69x = 4,386.72 × 1,852.18
  4. Step 4: Simplify right side
    3,178.69x = 8,124,995.05
  5. Step 5: Solve for x
    x = 8,124,995.05/3,178.69
  6. Step 6: Final answer
    x = 2,556.08

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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.