Home / 5,285.90-7,294.78-2,928.04

Finding the Fourth Proportional to 5,285.90, 7,294.78 and 2,928.04

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Solution

The fourth proportional to 5,285.90, 7,294.78 and 2,928.04 is: 4,040.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.90 : 7,294.78 = 2,928.04 : x
  2. Step 2: Convert to fraction form
    5,285.90/7,294.78 = 2,928.04/x
  3. Step 3: Cross multiply
    5,285.90x = 7,294.78 × 2,928.04
  4. Step 4: Simplify right side
    5,285.90x = 21,359,407.63
  5. Step 5: Solve for x
    x = 21,359,407.63/5,285.90
  6. Step 6: Final answer
    x = 4,040.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.