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Finding the Fourth Proportional to 8,870.70, 13,280.12 and 5,384.46

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Solution

The fourth proportional to 8,870.70, 13,280.12 and 5,384.46 is: 8,060.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.70 : 13,280.12 = 5,384.46 : x
  2. Step 2: Convert to fraction form
    8,870.70/13,280.12 = 5,384.46/x
  3. Step 3: Cross multiply
    8,870.70x = 13,280.12 × 5,384.46
  4. Step 4: Simplify right side
    8,870.70x = 71,506,248.01
  5. Step 5: Solve for x
    x = 71,506,248.01/8,870.70
  6. Step 6: Final answer
    x = 8,060.95

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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.