Home / 2,920.40-4,381.26-1,071.48

Finding the Fourth Proportional to 2,920.40, 4,381.26 and 1,071.48

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Solution

The fourth proportional to 2,920.40, 4,381.26 and 1,071.48 is: 1,607.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.40 : 4,381.26 = 1,071.48 : x
  2. Step 2: Convert to fraction form
    2,920.40/4,381.26 = 1,071.48/x
  3. Step 3: Cross multiply
    2,920.40x = 4,381.26 × 1,071.48
  4. Step 4: Simplify right side
    2,920.40x = 4,694,432.46
  5. Step 5: Solve for x
    x = 4,694,432.46/2,920.40
  6. Step 6: Final answer
    x = 1,607.46

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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.