Home / 7,820.61-11,721.08-5,587.82

Finding the Fourth Proportional to 7,820.61, 11,721.08 and 5,587.82

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Solution

The fourth proportional to 7,820.61, 11,721.08 and 5,587.82 is: 8,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.61 : 11,721.08 = 5,587.82 : x
  2. Step 2: Convert to fraction form
    7,820.61/11,721.08 = 5,587.82/x
  3. Step 3: Cross multiply
    7,820.61x = 11,721.08 × 5,587.82
  4. Step 4: Simplify right side
    7,820.61x = 65,495,318.30
  5. Step 5: Solve for x
    x = 65,495,318.30/7,820.61
  6. Step 6: Final answer
    x = 8,374.70

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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.