Home / 8,970.09-12,377.61-4,990.92

Finding the Fourth Proportional to 8,970.09, 12,377.61 and 4,990.92

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Solution

The fourth proportional to 8,970.09, 12,377.61 and 4,990.92 is: 6,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.09 : 12,377.61 = 4,990.92 : x
  2. Step 2: Convert to fraction form
    8,970.09/12,377.61 = 4,990.92/x
  3. Step 3: Cross multiply
    8,970.09x = 12,377.61 × 4,990.92
  4. Step 4: Simplify right side
    8,970.09x = 61,775,661.30
  5. Step 5: Solve for x
    x = 61,775,661.30/8,970.09
  6. Step 6: Final answer
    x = 6,886.85

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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.