Home / 5,430.71-8,148.33-1,921.19

Finding the Fourth Proportional to 5,430.71, 8,148.33 and 1,921.19

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Solution

The fourth proportional to 5,430.71, 8,148.33 and 1,921.19 is: 2,882.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.71 : 8,148.33 = 1,921.19 : x
  2. Step 2: Convert to fraction form
    5,430.71/8,148.33 = 1,921.19/x
  3. Step 3: Cross multiply
    5,430.71x = 8,148.33 × 1,921.19
  4. Step 4: Simplify right side
    5,430.71x = 15,654,449.37
  5. Step 5: Solve for x
    x = 15,654,449.37/5,430.71
  6. Step 6: Final answer
    x = 2,882.58

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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.