Home / 1,654.20-2,281.59-1,405.13

Finding the Fourth Proportional to 1,654.20, 2,281.59 and 1,405.13

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Solution

The fourth proportional to 1,654.20, 2,281.59 and 1,405.13 is: 1,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.20 : 2,281.59 = 1,405.13 : x
  2. Step 2: Convert to fraction form
    1,654.20/2,281.59 = 1,405.13/x
  3. Step 3: Cross multiply
    1,654.20x = 2,281.59 × 1,405.13
  4. Step 4: Simplify right side
    1,654.20x = 3,205,919.15
  5. Step 5: Solve for x
    x = 3,205,919.15/1,654.20
  6. Step 6: Final answer
    x = 1,938.05

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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.