Home / 1,731.80-2,387.40-1,068.20

Finding the Fourth Proportional to 1,731.80, 2,387.40 and 1,068.20

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Solution

The fourth proportional to 1,731.80, 2,387.40 and 1,068.20 is: 1,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.80 : 2,387.40 = 1,068.20 : x
  2. Step 2: Convert to fraction form
    1,731.80/2,387.40 = 1,068.20/x
  3. Step 3: Cross multiply
    1,731.80x = 2,387.40 × 1,068.20
  4. Step 4: Simplify right side
    1,731.80x = 2,550,220.68
  5. Step 5: Solve for x
    x = 2,550,220.68/1,731.80
  6. Step 6: Final answer
    x = 1,472.58

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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.