Home / 5,418.72-8,130.48-3,470.40

Finding the Fourth Proportional to 5,418.72, 8,130.48 and 3,470.40

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Solution

The fourth proportional to 5,418.72, 8,130.48 and 3,470.40 is: 5,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.72 : 8,130.48 = 3,470.40 : x
  2. Step 2: Convert to fraction form
    5,418.72/8,130.48 = 3,470.40/x
  3. Step 3: Cross multiply
    5,418.72x = 8,130.48 × 3,470.40
  4. Step 4: Simplify right side
    5,418.72x = 28,216,017.79
  5. Step 5: Solve for x
    x = 28,216,017.79/5,418.72
  6. Step 6: Final answer
    x = 5,207.14

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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.