Home / 8,790.32-12,130.80-5,013.92

Finding the Fourth Proportional to 8,790.32, 12,130.80 and 5,013.92

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Solution

The fourth proportional to 8,790.32, 12,130.80 and 5,013.92 is: 6,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.32 : 12,130.80 = 5,013.92 : x
  2. Step 2: Convert to fraction form
    8,790.32/12,130.80 = 5,013.92/x
  3. Step 3: Cross multiply
    8,790.32x = 12,130.80 × 5,013.92
  4. Step 4: Simplify right side
    8,790.32x = 60,822,860.74
  5. Step 5: Solve for x
    x = 60,822,860.74/8,790.32
  6. Step 6: Final answer
    x = 6,919.30

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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.