Home / 7,448.12-10,278.20-4,090.92

Finding the Fourth Proportional to 7,448.12, 10,278.20 and 4,090.92

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Solution

The fourth proportional to 7,448.12, 10,278.20 and 4,090.92 is: 5,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,448.12 : 10,278.20 = 4,090.92 : x
  2. Step 2: Convert to fraction form
    7,448.12/10,278.20 = 4,090.92/x
  3. Step 3: Cross multiply
    7,448.12x = 10,278.20 × 4,090.92
  4. Step 4: Simplify right side
    7,448.12x = 42,047,293.94
  5. Step 5: Solve for x
    x = 42,047,293.94/7,448.12
  6. Step 6: Final answer
    x = 5,645.36

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Half scale
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Double scale
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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.