Home / 5,315.89-7,973.84-4,387.45

Finding the Fourth Proportional to 5,315.89, 7,973.84 and 4,387.45

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Solution

The fourth proportional to 5,315.89, 7,973.84 and 4,387.45 is: 6,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.89 : 7,973.84 = 4,387.45 : x
  2. Step 2: Convert to fraction form
    5,315.89/7,973.84 = 4,387.45/x
  3. Step 3: Cross multiply
    5,315.89x = 7,973.84 × 4,387.45
  4. Step 4: Simplify right side
    5,315.89x = 34,984,824.31
  5. Step 5: Solve for x
    x = 34,984,824.31/5,315.89
  6. Step 6: Final answer
    x = 6,581.18

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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.