Home / 7,113.10-9,815.53-4,129.16

Finding the Fourth Proportional to 7,113.10, 9,815.53 and 4,129.16

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Solution

The fourth proportional to 7,113.10, 9,815.53 and 4,129.16 is: 5,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.10 : 9,815.53 = 4,129.16 : x
  2. Step 2: Convert to fraction form
    7,113.10/9,815.53 = 4,129.16/x
  3. Step 3: Cross multiply
    7,113.10x = 9,815.53 × 4,129.16
  4. Step 4: Simplify right side
    7,113.10x = 40,529,876.70
  5. Step 5: Solve for x
    x = 40,529,876.70/7,113.10
  6. Step 6: Final answer
    x = 5,697.92

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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.