Home / 6,617.12-9,931.80-2,721.80

Finding the Fourth Proportional to 6,617.12, 9,931.80 and 2,721.80

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Solution

The fourth proportional to 6,617.12, 9,931.80 and 2,721.80 is: 4,085.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.12 : 9,931.80 = 2,721.80 : x
  2. Step 2: Convert to fraction form
    6,617.12/9,931.80 = 2,721.80/x
  3. Step 3: Cross multiply
    6,617.12x = 9,931.80 × 2,721.80
  4. Step 4: Simplify right side
    6,617.12x = 27,032,373.24
  5. Step 5: Solve for x
    x = 27,032,373.24/6,617.12
  6. Step 6: Final answer
    x = 4,085.22

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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.