Home / 8,923.88-12,315.50-5,146.98

Finding the Fourth Proportional to 8,923.88, 12,315.50 and 5,146.98

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Solution

The fourth proportional to 8,923.88, 12,315.50 and 5,146.98 is: 7,103.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,923.88 : 12,315.50 = 5,146.98 : x
  2. Step 2: Convert to fraction form
    8,923.88/12,315.50 = 5,146.98/x
  3. Step 3: Cross multiply
    8,923.88x = 12,315.50 × 5,146.98
  4. Step 4: Simplify right side
    8,923.88x = 63,387,645.06
  5. Step 5: Solve for x
    x = 63,387,645.06/8,923.88
  6. Step 6: Final answer
    x = 7,103.15

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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.