Home / 7,478.08-11,215.56-2,547.68

Finding the Fourth Proportional to 7,478.08, 11,215.56 and 2,547.68

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Solution

The fourth proportional to 7,478.08, 11,215.56 and 2,547.68 is: 3,820.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.08 : 11,215.56 = 2,547.68 : x
  2. Step 2: Convert to fraction form
    7,478.08/11,215.56 = 2,547.68/x
  3. Step 3: Cross multiply
    7,478.08x = 11,215.56 × 2,547.68
  4. Step 4: Simplify right side
    7,478.08x = 28,573,657.90
  5. Step 5: Solve for x
    x = 28,573,657.90/7,478.08
  6. Step 6: Final answer
    x = 3,820.99

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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.