Home / 1,760.39-2,428.21-1,387.25

Finding the Fourth Proportional to 1,760.39, 2,428.21 and 1,387.25

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Solution

The fourth proportional to 1,760.39, 2,428.21 and 1,387.25 is: 1,913.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.39 : 2,428.21 = 1,387.25 : x
  2. Step 2: Convert to fraction form
    1,760.39/2,428.21 = 1,387.25/x
  3. Step 3: Cross multiply
    1,760.39x = 2,428.21 × 1,387.25
  4. Step 4: Simplify right side
    1,760.39x = 3,368,534.32
  5. Step 5: Solve for x
    x = 3,368,534.32/1,760.39
  6. Step 6: Final answer
    x = 1,913.52

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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.