Home / 9,145.29-12,621.78-5,264.64

Finding the Fourth Proportional to 9,145.29, 12,621.78 and 5,264.64

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Solution

The fourth proportional to 9,145.29, 12,621.78 and 5,264.64 is: 7,265.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.29 : 12,621.78 = 5,264.64 : x
  2. Step 2: Convert to fraction form
    9,145.29/12,621.78 = 5,264.64/x
  3. Step 3: Cross multiply
    9,145.29x = 12,621.78 × 5,264.64
  4. Step 4: Simplify right side
    9,145.29x = 66,449,127.86
  5. Step 5: Solve for x
    x = 66,449,127.86/9,145.29
  6. Step 6: Final answer
    x = 7,265.94

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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.