Home / 5,117.94-7,060.05-3,128.58

Finding the Fourth Proportional to 5,117.94, 7,060.05 and 3,128.58

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Solution

The fourth proportional to 5,117.94, 7,060.05 and 3,128.58 is: 4,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.94 : 7,060.05 = 3,128.58 : x
  2. Step 2: Convert to fraction form
    5,117.94/7,060.05 = 3,128.58/x
  3. Step 3: Cross multiply
    5,117.94x = 7,060.05 × 3,128.58
  4. Step 4: Simplify right side
    5,117.94x = 22,087,931.23
  5. Step 5: Solve for x
    x = 22,087,931.23/5,117.94
  6. Step 6: Final answer
    x = 4,315.79

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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.