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Finding the Fourth Proportional to 8,347.80, 12,510.66 and 3,660.74

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Solution

The fourth proportional to 8,347.80, 12,510.66 and 3,660.74 is: 5,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.80 : 12,510.66 = 3,660.74 : x
  2. Step 2: Convert to fraction form
    8,347.80/12,510.66 = 3,660.74/x
  3. Step 3: Cross multiply
    8,347.80x = 12,510.66 × 3,660.74
  4. Step 4: Simplify right side
    8,347.80x = 45,798,273.49
  5. Step 5: Solve for x
    x = 45,798,273.49/8,347.80
  6. Step 6: Final answer
    x = 5,486.27

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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.