Home / 4,312.89-6,470.15-1,390.41

Finding the Fourth Proportional to 4,312.89, 6,470.15 and 1,390.41

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Solution

The fourth proportional to 4,312.89, 6,470.15 and 1,390.41 is: 2,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.89 : 6,470.15 = 1,390.41 : x
  2. Step 2: Convert to fraction form
    4,312.89/6,470.15 = 1,390.41/x
  3. Step 3: Cross multiply
    4,312.89x = 6,470.15 × 1,390.41
  4. Step 4: Simplify right side
    4,312.89x = 8,996,154.31
  5. Step 5: Solve for x
    x = 8,996,154.31/4,312.89
  6. Step 6: Final answer
    x = 2,085.88

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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.