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Finding the Fourth Proportional to 8,368, 11,547.84 and 4,642.72

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Solution

The fourth proportional to 8,368, 11,547.84 and 4,642.72 is: 6,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368 : 11,547.84 = 4,642.72 : x
  2. Step 2: Convert to fraction form
    8,368/11,547.84 = 4,642.72/x
  3. Step 3: Cross multiply
    8,368x = 11,547.84 × 4,642.72
  4. Step 4: Simplify right side
    8,368x = 53,613,387.72
  5. Step 5: Solve for x
    x = 53,613,387.72/8,368
  6. Step 6: Final answer
    x = 6,406.95

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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.