Home / 9,129.63-12,599.26-5,150.72

Finding the Fourth Proportional to 9,129.63, 12,599.26 and 5,150.72

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Solution

The fourth proportional to 9,129.63, 12,599.26 and 5,150.72 is: 7,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.63 : 12,599.26 = 5,150.72 : x
  2. Step 2: Convert to fraction form
    9,129.63/12,599.26 = 5,150.72/x
  3. Step 3: Cross multiply
    9,129.63x = 12,599.26 × 5,150.72
  4. Step 4: Simplify right side
    9,129.63x = 64,895,308.06
  5. Step 5: Solve for x
    x = 64,895,308.06/9,129.63
  6. Step 6: Final answer
    x = 7,108.21

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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.