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Finding the Fourth Proportional to 10,312.79, 15,468.34 and 2,917.07

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Solution

The fourth proportional to 10,312.79, 15,468.34 and 2,917.07 is: 4,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.79 : 15,468.34 = 2,917.07 : x
  2. Step 2: Convert to fraction form
    10,312.79/15,468.34 = 2,917.07/x
  3. Step 3: Cross multiply
    10,312.79x = 15,468.34 × 2,917.07
  4. Step 4: Simplify right side
    10,312.79x = 45,122,230.56
  5. Step 5: Solve for x
    x = 45,122,230.56/10,312.79
  6. Step 6: Final answer
    x = 4,375.37

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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.