Home / 7,681.23-11,512.13-5,209.92

Finding the Fourth Proportional to 7,681.23, 11,512.13 and 5,209.92

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Solution

The fourth proportional to 7,681.23, 11,512.13 and 5,209.92 is: 7,808.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.23 : 11,512.13 = 5,209.92 : x
  2. Step 2: Convert to fraction form
    7,681.23/11,512.13 = 5,209.92/x
  3. Step 3: Cross multiply
    7,681.23x = 11,512.13 × 5,209.92
  4. Step 4: Simplify right side
    7,681.23x = 59,977,250.28
  5. Step 5: Solve for x
    x = 59,977,250.28/7,681.23
  6. Step 6: Final answer
    x = 7,808.29

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1.5x scale

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.