Home / 1,160.28-1,739.39-429.39

Finding the Fourth Proportional to 1,160.28, 1,739.39 and 429.39

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Solution

The fourth proportional to 1,160.28, 1,739.39 and 429.39 is: 643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.28 : 1,739.39 = 429.39 : x
  2. Step 2: Convert to fraction form
    1,160.28/1,739.39 = 429.39/x
  3. Step 3: Cross multiply
    1,160.28x = 1,739.39 × 429.39
  4. Step 4: Simplify right side
    1,160.28x = 746,874.53
  5. Step 5: Solve for x
    x = 746,874.53/1,160.28
  6. Step 6: Final answer
    x = 643.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.