Home / 7,131.63-10,688.54-3,432.87

Finding the Fourth Proportional to 7,131.63, 10,688.54 and 3,432.87

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Solution

The fourth proportional to 7,131.63, 10,688.54 and 3,432.87 is: 5,145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.63 : 10,688.54 = 3,432.87 : x
  2. Step 2: Convert to fraction form
    7,131.63/10,688.54 = 3,432.87/x
  3. Step 3: Cross multiply
    7,131.63x = 10,688.54 × 3,432.87
  4. Step 4: Simplify right side
    7,131.63x = 36,692,390.74
  5. Step 5: Solve for x
    x = 36,692,390.74/7,131.63
  6. Step 6: Final answer
    x = 5,145.02

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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.