Home / 7,959.20-10,988.66-5,127.98

Finding the Fourth Proportional to 7,959.20, 10,988.66 and 5,127.98

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Solution

The fourth proportional to 7,959.20, 10,988.66 and 5,127.98 is: 7,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.20 : 10,988.66 = 5,127.98 : x
  2. Step 2: Convert to fraction form
    7,959.20/10,988.66 = 5,127.98/x
  3. Step 3: Cross multiply
    7,959.20x = 10,988.66 × 5,127.98
  4. Step 4: Simplify right side
    7,959.20x = 56,349,628.71
  5. Step 5: Solve for x
    x = 56,349,628.71/7,959.20
  6. Step 6: Final answer
    x = 7,079.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.