Home / 7,127.76-10,685.50-2,742.24

Finding the Fourth Proportional to 7,127.76, 10,685.50 and 2,742.24

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Solution

The fourth proportional to 7,127.76, 10,685.50 and 2,742.24 is: 4,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.76 : 10,685.50 = 2,742.24 : x
  2. Step 2: Convert to fraction form
    7,127.76/10,685.50 = 2,742.24/x
  3. Step 3: Cross multiply
    7,127.76x = 10,685.50 × 2,742.24
  4. Step 4: Simplify right side
    7,127.76x = 29,302,205.52
  5. Step 5: Solve for x
    x = 29,302,205.52/7,127.76
  6. Step 6: Final answer
    x = 4,111.00

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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.