Home / 8,290.48-12,426.96-2,742.40

Finding the Fourth Proportional to 8,290.48, 12,426.96 and 2,742.40

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Solution

The fourth proportional to 8,290.48, 12,426.96 and 2,742.40 is: 4,110.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.48 : 12,426.96 = 2,742.40 : x
  2. Step 2: Convert to fraction form
    8,290.48/12,426.96 = 2,742.40/x
  3. Step 3: Cross multiply
    8,290.48x = 12,426.96 × 2,742.40
  4. Step 4: Simplify right side
    8,290.48x = 34,079,695.10
  5. Step 5: Solve for x
    x = 34,079,695.10/8,290.48
  6. Step 6: Final answer
    x = 4,110.70

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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.