Home / 7,140.48-9,853.20-3,995.52

Finding the Fourth Proportional to 7,140.48, 9,853.20 and 3,995.52

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Solution

The fourth proportional to 7,140.48, 9,853.20 and 3,995.52 is: 5,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.48 : 9,853.20 = 3,995.52 : x
  2. Step 2: Convert to fraction form
    7,140.48/9,853.20 = 3,995.52/x
  3. Step 3: Cross multiply
    7,140.48x = 9,853.20 × 3,995.52
  4. Step 4: Simplify right side
    7,140.48x = 39,368,657.66
  5. Step 5: Solve for x
    x = 39,368,657.66/7,140.48
  6. Step 6: Final answer
    x = 5,513.45

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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.