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Finding the Fourth Proportional to 8,607.04, 12,920.28 and 3,416.56

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Solution

The fourth proportional to 8,607.04, 12,920.28 and 3,416.56 is: 5,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.04 : 12,920.28 = 3,416.56 : x
  2. Step 2: Convert to fraction form
    8,607.04/12,920.28 = 3,416.56/x
  3. Step 3: Cross multiply
    8,607.04x = 12,920.28 × 3,416.56
  4. Step 4: Simplify right side
    8,607.04x = 44,142,911.84
  5. Step 5: Solve for x
    x = 44,142,911.84/8,607.04
  6. Step 6: Final answer
    x = 5,128.70

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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.