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Finding the Fourth Proportional to 8,695.30, 13,004.55 and 7,312.90

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Solution

The fourth proportional to 8,695.30, 13,004.55 and 7,312.90 is: 10,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.30 : 13,004.55 = 7,312.90 : x
  2. Step 2: Convert to fraction form
    8,695.30/13,004.55 = 7,312.90/x
  3. Step 3: Cross multiply
    8,695.30x = 13,004.55 × 7,312.90
  4. Step 4: Simplify right side
    8,695.30x = 95,100,973.70
  5. Step 5: Solve for x
    x = 95,100,973.70/8,695.30
  6. Step 6: Final answer
    x = 10,937.05

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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.