Home / 9,830.28-13,565.76-5,638.50

Finding the Fourth Proportional to 9,830.28, 13,565.76 and 5,638.50

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Solution

The fourth proportional to 9,830.28, 13,565.76 and 5,638.50 is: 7,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,830.28 : 13,565.76 = 5,638.50 : x
  2. Step 2: Convert to fraction form
    9,830.28/13,565.76 = 5,638.50/x
  3. Step 3: Cross multiply
    9,830.28x = 13,565.76 × 5,638.50
  4. Step 4: Simplify right side
    9,830.28x = 76,490,537.76
  5. Step 5: Solve for x
    x = 76,490,537.76/9,830.28
  6. Step 6: Final answer
    x = 7,781.11

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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.