Home / 1,840.28-2,539.56-1,397.40

Finding the Fourth Proportional to 1,840.28, 2,539.56 and 1,397.40

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Solution

The fourth proportional to 1,840.28, 2,539.56 and 1,397.40 is: 1,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.28 : 2,539.56 = 1,397.40 : x
  2. Step 2: Convert to fraction form
    1,840.28/2,539.56 = 1,397.40/x
  3. Step 3: Cross multiply
    1,840.28x = 2,539.56 × 1,397.40
  4. Step 4: Simplify right side
    1,840.28x = 3,548,781.14
  5. Step 5: Solve for x
    x = 3,548,781.14/1,840.28
  6. Step 6: Final answer
    x = 1,928.39

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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.