Home / 7,113.06-9,816.18-4,129.20

Finding the Fourth Proportional to 7,113.06, 9,816.18 and 4,129.20

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Solution

The fourth proportional to 7,113.06, 9,816.18 and 4,129.20 is: 5,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.06 : 9,816.18 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    7,113.06/9,816.18 = 4,129.20/x
  3. Step 3: Cross multiply
    7,113.06x = 9,816.18 × 4,129.20
  4. Step 4: Simplify right side
    7,113.06x = 40,532,970.46
  5. Step 5: Solve for x
    x = 40,532,970.46/7,113.06
  6. Step 6: Final answer
    x = 5,698.39

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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.