Home / 7,112.15-9,814.70-3,925.47

Finding the Fourth Proportional to 7,112.15, 9,814.70 and 3,925.47

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Solution

The fourth proportional to 7,112.15, 9,814.70 and 3,925.47 is: 5,417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.15 : 9,814.70 = 3,925.47 : x
  2. Step 2: Convert to fraction form
    7,112.15/9,814.70 = 3,925.47/x
  3. Step 3: Cross multiply
    7,112.15x = 9,814.70 × 3,925.47
  4. Step 4: Simplify right side
    7,112.15x = 38,527,290.78
  5. Step 5: Solve for x
    x = 38,527,290.78/7,112.15
  6. Step 6: Final answer
    x = 5,417.11

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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.