Home / 7,113.56-9,816.80-4,129.52

Finding the Fourth Proportional to 7,113.56, 9,816.80 and 4,129.52

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Solution

The fourth proportional to 7,113.56, 9,816.80 and 4,129.52 is: 5,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.56 : 9,816.80 = 4,129.52 : x
  2. Step 2: Convert to fraction form
    7,113.56/9,816.80 = 4,129.52/x
  3. Step 3: Cross multiply
    7,113.56x = 9,816.80 × 4,129.52
  4. Step 4: Simplify right side
    7,113.56x = 40,538,602.20
  5. Step 5: Solve for x
    x = 40,538,602.20/7,113.56
  6. Step 6: Final answer
    x = 5,698.78

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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.