Home / 9,128.65-12,597.51-5,149.75

Finding the Fourth Proportional to 9,128.65, 12,597.51 and 5,149.75

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Solution

The fourth proportional to 9,128.65, 12,597.51 and 5,149.75 is: 7,106.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.65 : 12,597.51 = 5,149.75 : x
  2. Step 2: Convert to fraction form
    9,128.65/12,597.51 = 5,149.75/x
  3. Step 3: Cross multiply
    9,128.65x = 12,597.51 × 5,149.75
  4. Step 4: Simplify right side
    9,128.65x = 64,874,027.12
  5. Step 5: Solve for x
    x = 64,874,027.12/9,128.65
  6. Step 6: Final answer
    x = 7,106.64

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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.