Home / 7,113.56-9,812.61-4,129.01

Finding the Fourth Proportional to 7,113.56, 9,812.61 and 4,129.01

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Solution

The fourth proportional to 7,113.56, 9,812.61 and 4,129.01 is: 5,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.56 : 9,812.61 = 4,129.01 : x
  2. Step 2: Convert to fraction form
    7,113.56/9,812.61 = 4,129.01/x
  3. Step 3: Cross multiply
    7,113.56x = 9,812.61 × 4,129.01
  4. Step 4: Simplify right side
    7,113.56x = 40,516,315.75
  5. Step 5: Solve for x
    x = 40,516,315.75/7,113.56
  6. Step 6: Final answer
    x = 5,695.65

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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.