Home / 8,480.19-12,658.35-7,854.87

Finding the Fourth Proportional to 8,480.19, 12,658.35 and 7,854.87

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Solution

The fourth proportional to 8,480.19, 12,658.35 and 7,854.87 is: 11,724.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.19 : 12,658.35 = 7,854.87 : x
  2. Step 2: Convert to fraction form
    8,480.19/12,658.35 = 7,854.87/x
  3. Step 3: Cross multiply
    8,480.19x = 12,658.35 × 7,854.87
  4. Step 4: Simplify right side
    8,480.19x = 99,429,693.66
  5. Step 5: Solve for x
    x = 99,429,693.66/8,480.19
  6. Step 6: Final answer
    x = 11,724.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.