Home / 8,721.48-12,031.41-5,182.19

Finding the Fourth Proportional to 8,721.48, 12,031.41 and 5,182.19

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Solution

The fourth proportional to 8,721.48, 12,031.41 and 5,182.19 is: 7,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.48 : 12,031.41 = 5,182.19 : x
  2. Step 2: Convert to fraction form
    8,721.48/12,031.41 = 5,182.19/x
  3. Step 3: Cross multiply
    8,721.48x = 12,031.41 × 5,182.19
  4. Step 4: Simplify right side
    8,721.48x = 62,349,056.98
  5. Step 5: Solve for x
    x = 62,349,056.98/8,721.48
  6. Step 6: Final answer
    x = 7,148.90

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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.