Home / 2,386.85-3,291.37-1,888.70

Finding the Fourth Proportional to 2,386.85, 3,291.37 and 1,888.70

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Solution

The fourth proportional to 2,386.85, 3,291.37 and 1,888.70 is: 2,604.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.85 : 3,291.37 = 1,888.70 : x
  2. Step 2: Convert to fraction form
    2,386.85/3,291.37 = 1,888.70/x
  3. Step 3: Cross multiply
    2,386.85x = 3,291.37 × 1,888.70
  4. Step 4: Simplify right side
    2,386.85x = 6,216,410.52
  5. Step 5: Solve for x
    x = 6,216,410.52/2,386.85
  6. Step 6: Final answer
    x = 2,604.44

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Find fourth proportional to 2,387.85, 3,292.75 and 1,889.70
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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.