Home / 8,547.20-12,818.40-2,705.60

Finding the Fourth Proportional to 8,547.20, 12,818.40 and 2,705.60

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Solution

The fourth proportional to 8,547.20, 12,818.40 and 2,705.60 is: 4,057.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.20 : 12,818.40 = 2,705.60 : x
  2. Step 2: Convert to fraction form
    8,547.20/12,818.40 = 2,705.60/x
  3. Step 3: Cross multiply
    8,547.20x = 12,818.40 × 2,705.60
  4. Step 4: Simplify right side
    8,547.20x = 34,681,463.04
  5. Step 5: Solve for x
    x = 34,681,463.04/8,547.20
  6. Step 6: Final answer
    x = 4,057.64

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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.