Home / 8,565.36-11,815.28-5,377.40

Finding the Fourth Proportional to 8,565.36, 11,815.28 and 5,377.40

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Solution

The fourth proportional to 8,565.36, 11,815.28 and 5,377.40 is: 7,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.36 : 11,815.28 = 5,377.40 : x
  2. Step 2: Convert to fraction form
    8,565.36/11,815.28 = 5,377.40/x
  3. Step 3: Cross multiply
    8,565.36x = 11,815.28 × 5,377.40
  4. Step 4: Simplify right side
    8,565.36x = 63,535,486.67
  5. Step 5: Solve for x
    x = 63,535,486.67/8,565.36
  6. Step 6: Final answer
    x = 7,417.73

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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.