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Finding the Fourth Proportional to 6,547.68, 9,806.40 and 4,687.20

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Solution

The fourth proportional to 6,547.68, 9,806.40 and 4,687.20 is: 7,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,547.68 : 9,806.40 = 4,687.20 : x
  2. Step 2: Convert to fraction form
    6,547.68/9,806.40 = 4,687.20/x
  3. Step 3: Cross multiply
    6,547.68x = 9,806.40 × 4,687.20
  4. Step 4: Simplify right side
    6,547.68x = 45,964,558.08
  5. Step 5: Solve for x
    x = 45,964,558.08/6,547.68
  6. Step 6: Final answer
    x = 7,019.98

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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.