Home / 5,281.31-7,288.16-2,923.40

Finding the Fourth Proportional to 5,281.31, 7,288.16 and 2,923.40

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Solution

The fourth proportional to 5,281.31, 7,288.16 and 2,923.40 is: 4,034.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.31 : 7,288.16 = 2,923.40 : x
  2. Step 2: Convert to fraction form
    5,281.31/7,288.16 = 2,923.40/x
  3. Step 3: Cross multiply
    5,281.31x = 7,288.16 × 2,923.40
  4. Step 4: Simplify right side
    5,281.31x = 21,306,155.89
  5. Step 5: Solve for x
    x = 21,306,155.89/5,281.31
  6. Step 6: Final answer
    x = 4,034.26

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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.