Home / 3,115.61-4,672.61-923.82

Finding the Fourth Proportional to 3,115.61, 4,672.61 and 923.82

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Solution

The fourth proportional to 3,115.61, 4,672.61 and 923.82 is: 1,385.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.61 : 4,672.61 = 923.82 : x
  2. Step 2: Convert to fraction form
    3,115.61/4,672.61 = 923.82/x
  3. Step 3: Cross multiply
    3,115.61x = 4,672.61 × 923.82
  4. Step 4: Simplify right side
    3,115.61x = 4,316,670.40
  5. Step 5: Solve for x
    x = 4,316,670.40/3,115.61
  6. Step 6: Final answer
    x = 1,385.50

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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.