Home / 9,145.07-12,620.10-5,367.57

Finding the Fourth Proportional to 9,145.07, 12,620.10 and 5,367.57

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Solution

The fourth proportional to 9,145.07, 12,620.10 and 5,367.57 is: 7,407.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.07 : 12,620.10 = 5,367.57 : x
  2. Step 2: Convert to fraction form
    9,145.07/12,620.10 = 5,367.57/x
  3. Step 3: Cross multiply
    9,145.07x = 12,620.10 × 5,367.57
  4. Step 4: Simplify right side
    9,145.07x = 67,739,242.96
  5. Step 5: Solve for x
    x = 67,739,242.96/9,145.07
  6. Step 6: Final answer
    x = 7,407.19

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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.