Home / 6,429.42-9,639.27-5,130.18

Finding the Fourth Proportional to 6,429.42, 9,639.27 and 5,130.18

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Solution

The fourth proportional to 6,429.42, 9,639.27 and 5,130.18 is: 7,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.42 : 9,639.27 = 5,130.18 : x
  2. Step 2: Convert to fraction form
    6,429.42/9,639.27 = 5,130.18/x
  3. Step 3: Cross multiply
    6,429.42x = 9,639.27 × 5,130.18
  4. Step 4: Simplify right side
    6,429.42x = 49,451,190.17
  5. Step 5: Solve for x
    x = 49,451,190.17/6,429.42
  6. Step 6: Final answer
    x = 7,691.39

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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.