Home / 8,987.30-12,402.46-5,212.66

Finding the Fourth Proportional to 8,987.30, 12,402.46 and 5,212.66

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Solution

The fourth proportional to 8,987.30, 12,402.46 and 5,212.66 is: 7,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.30 : 12,402.46 = 5,212.66 : x
  2. Step 2: Convert to fraction form
    8,987.30/12,402.46 = 5,212.66/x
  3. Step 3: Cross multiply
    8,987.30x = 12,402.46 × 5,212.66
  4. Step 4: Simplify right side
    8,987.30x = 64,649,807.14
  5. Step 5: Solve for x
    x = 64,649,807.14/8,987.30
  6. Step 6: Final answer
    x = 7,193.46

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1.5x scale

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.