Home / 8,899.08-12,280.80-4,920.36

Finding the Fourth Proportional to 8,899.08, 12,280.80 and 4,920.36

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Solution

The fourth proportional to 8,899.08, 12,280.80 and 4,920.36 is: 6,790.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.08 : 12,280.80 = 4,920.36 : x
  2. Step 2: Convert to fraction form
    8,899.08/12,280.80 = 4,920.36/x
  3. Step 3: Cross multiply
    8,899.08x = 12,280.80 × 4,920.36
  4. Step 4: Simplify right side
    8,899.08x = 60,425,957.09
  5. Step 5: Solve for x
    x = 60,425,957.09/8,899.08
  6. Step 6: Final answer
    x = 6,790.14

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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.