Home / 7,407.90-11,113.61-2,478.11

Finding the Fourth Proportional to 7,407.90, 11,113.61 and 2,478.11

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Solution

The fourth proportional to 7,407.90, 11,113.61 and 2,478.11 is: 3,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.90 : 11,113.61 = 2,478.11 : x
  2. Step 2: Convert to fraction form
    7,407.90/11,113.61 = 2,478.11/x
  3. Step 3: Cross multiply
    7,407.90x = 11,113.61 × 2,478.11
  4. Step 4: Simplify right side
    7,407.90x = 27,540,680.12
  5. Step 5: Solve for x
    x = 27,540,680.12/7,407.90
  6. Step 6: Final answer
    x = 3,717.74

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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.