Home / 8,429.60-11,631.12-6,854.96

Finding the Fourth Proportional to 8,429.60, 11,631.12 and 6,854.96

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Solution

The fourth proportional to 8,429.60, 11,631.12 and 6,854.96 is: 9,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.60 : 11,631.12 = 6,854.96 : x
  2. Step 2: Convert to fraction form
    8,429.60/11,631.12 = 6,854.96/x
  3. Step 3: Cross multiply
    8,429.60x = 11,631.12 × 6,854.96
  4. Step 4: Simplify right side
    8,429.60x = 79,730,862.36
  5. Step 5: Solve for x
    x = 79,730,862.36/8,429.60
  6. Step 6: Final answer
    x = 9,458.44

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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.