Home / 5,430.48-8,145.72-1,326.48

Finding the Fourth Proportional to 5,430.48, 8,145.72 and 1,326.48

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Solution

The fourth proportional to 5,430.48, 8,145.72 and 1,326.48 is: 1,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.48 : 8,145.72 = 1,326.48 : x
  2. Step 2: Convert to fraction form
    5,430.48/8,145.72 = 1,326.48/x
  3. Step 3: Cross multiply
    5,430.48x = 8,145.72 × 1,326.48
  4. Step 4: Simplify right side
    5,430.48x = 10,805,134.67
  5. Step 5: Solve for x
    x = 10,805,134.67/5,430.48
  6. Step 6: Final answer
    x = 1,989.72

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.