Home / 7,280.75-10,034.10-5,287.85

Finding the Fourth Proportional to 7,280.75, 10,034.10 and 5,287.85

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Solution

The fourth proportional to 7,280.75, 10,034.10 and 5,287.85 is: 7,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.75 : 10,034.10 = 5,287.85 : x
  2. Step 2: Convert to fraction form
    7,280.75/10,034.10 = 5,287.85/x
  3. Step 3: Cross multiply
    7,280.75x = 10,034.10 × 5,287.85
  4. Step 4: Simplify right side
    7,280.75x = 53,058,765.51
  5. Step 5: Solve for x
    x = 53,058,765.51/7,280.75
  6. Step 6: Final answer
    x = 7,287.55

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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.