Home / 9,312.18-12,850.47-5,120.34

Finding the Fourth Proportional to 9,312.18, 12,850.47 and 5,120.34

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Solution

The fourth proportional to 9,312.18, 12,850.47 and 5,120.34 is: 7,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,312.18 : 12,850.47 = 5,120.34 : x
  2. Step 2: Convert to fraction form
    9,312.18/12,850.47 = 5,120.34/x
  3. Step 3: Cross multiply
    9,312.18x = 12,850.47 × 5,120.34
  4. Step 4: Simplify right side
    9,312.18x = 65,798,775.56
  5. Step 5: Solve for x
    x = 65,798,775.56/9,312.18
  6. Step 6: Final answer
    x = 7,065.88

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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.