Home / 8,681.30-11,985.53-6,688.02

Finding the Fourth Proportional to 8,681.30, 11,985.53 and 6,688.02

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Solution

The fourth proportional to 8,681.30, 11,985.53 and 6,688.02 is: 9,233.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.30 : 11,985.53 = 6,688.02 : x
  2. Step 2: Convert to fraction form
    8,681.30/11,985.53 = 6,688.02/x
  3. Step 3: Cross multiply
    8,681.30x = 11,985.53 × 6,688.02
  4. Step 4: Simplify right side
    8,681.30x = 80,159,430.91
  5. Step 5: Solve for x
    x = 80,159,430.91/8,681.30
  6. Step 6: Final answer
    x = 9,233.58

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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.