Home / 8,917.65-12,306.48-5,140.75

Finding the Fourth Proportional to 8,917.65, 12,306.48 and 5,140.75

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Solution

The fourth proportional to 8,917.65, 12,306.48 and 5,140.75 is: 7,094.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.65 : 12,306.48 = 5,140.75 : x
  2. Step 2: Convert to fraction form
    8,917.65/12,306.48 = 5,140.75/x
  3. Step 3: Cross multiply
    8,917.65x = 12,306.48 × 5,140.75
  4. Step 4: Simplify right side
    8,917.65x = 63,264,507.32
  5. Step 5: Solve for x
    x = 63,264,507.32/8,917.65
  6. Step 6: Final answer
    x = 7,094.30

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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.