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Finding the Fourth Proportional to 8,700.12, 13,050.90 and 2,460.20

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Solution

The fourth proportional to 8,700.12, 13,050.90 and 2,460.20 is: 3,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.12 : 13,050.90 = 2,460.20 : x
  2. Step 2: Convert to fraction form
    8,700.12/13,050.90 = 2,460.20/x
  3. Step 3: Cross multiply
    8,700.12x = 13,050.90 × 2,460.20
  4. Step 4: Simplify right side
    8,700.12x = 32,107,758.93
  5. Step 5: Solve for x
    x = 32,107,758.93/8,700.12
  6. Step 6: Final answer
    x = 3,690.50

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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.