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Finding the Fourth Proportional to 8,284.60, 12,410.70 and 4,987.90

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Solution

The fourth proportional to 8,284.60, 12,410.70 and 4,987.90 is: 7,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,284.60 : 12,410.70 = 4,987.90 : x
  2. Step 2: Convert to fraction form
    8,284.60/12,410.70 = 4,987.90/x
  3. Step 3: Cross multiply
    8,284.60x = 12,410.70 × 4,987.90
  4. Step 4: Simplify right side
    8,284.60x = 61,903,330.53
  5. Step 5: Solve for x
    x = 61,903,330.53/8,284.60
  6. Step 6: Final answer
    x = 7,472.10

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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.