Home / 4,312.89-6,470.28-1,391.22

Finding the Fourth Proportional to 4,312.89, 6,470.28 and 1,391.22

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Solution

The fourth proportional to 4,312.89, 6,470.28 and 1,391.22 is: 2,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.89 : 6,470.28 = 1,391.22 : x
  2. Step 2: Convert to fraction form
    4,312.89/6,470.28 = 1,391.22/x
  3. Step 3: Cross multiply
    4,312.89x = 6,470.28 × 1,391.22
  4. Step 4: Simplify right side
    4,312.89x = 9,001,582.94
  5. Step 5: Solve for x
    x = 9,001,582.94/4,312.89
  6. Step 6: Final answer
    x = 2,087.13

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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.