Home / 8,268.80-12,403.20-4,988.30

Finding the Fourth Proportional to 8,268.80, 12,403.20 and 4,988.30

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Solution

The fourth proportional to 8,268.80, 12,403.20 and 4,988.30 is: 7,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,268.80 : 12,403.20 = 4,988.30 : x
  2. Step 2: Convert to fraction form
    8,268.80/12,403.20 = 4,988.30/x
  3. Step 3: Cross multiply
    8,268.80x = 12,403.20 × 4,988.30
  4. Step 4: Simplify right side
    8,268.80x = 61,870,882.56
  5. Step 5: Solve for x
    x = 61,870,882.56/8,268.80
  6. Step 6: Final answer
    x = 7,482.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.