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Finding the Fourth Proportional to 8,670.70, 12,974.07 and 6,130.28

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Solution

The fourth proportional to 8,670.70, 12,974.07 and 6,130.28 is: 9,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.70 : 12,974.07 = 6,130.28 : x
  2. Step 2: Convert to fraction form
    8,670.70/12,974.07 = 6,130.28/x
  3. Step 3: Cross multiply
    8,670.70x = 12,974.07 × 6,130.28
  4. Step 4: Simplify right side
    8,670.70x = 79,534,737.26
  5. Step 5: Solve for x
    x = 79,534,737.26/8,670.70
  6. Step 6: Final answer
    x = 9,172.82

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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.