Home / 8,731.18-12,051.35-5,376.81

Finding the Fourth Proportional to 8,731.18, 12,051.35 and 5,376.81

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Solution

The fourth proportional to 8,731.18, 12,051.35 and 5,376.81 is: 7,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.18 : 12,051.35 = 5,376.81 : x
  2. Step 2: Convert to fraction form
    8,731.18/12,051.35 = 5,376.81/x
  3. Step 3: Cross multiply
    8,731.18x = 12,051.35 × 5,376.81
  4. Step 4: Simplify right side
    8,731.18x = 64,797,805.00
  5. Step 5: Solve for x
    x = 64,797,805.00/8,731.18
  6. Step 6: Final answer
    x = 7,421.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.