Home / 5,279.04-7,285.14-2,921.40

Finding the Fourth Proportional to 5,279.04, 7,285.14 and 2,921.40

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Solution

The fourth proportional to 5,279.04, 7,285.14 and 2,921.40 is: 4,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.04 : 7,285.14 = 2,921.40 : x
  2. Step 2: Convert to fraction form
    5,279.04/7,285.14 = 2,921.40/x
  3. Step 3: Cross multiply
    5,279.04x = 7,285.14 × 2,921.40
  4. Step 4: Simplify right side
    5,279.04x = 21,282,808.00
  5. Step 5: Solve for x
    x = 21,282,808.00/5,279.04
  6. Step 6: Final answer
    x = 4,031.57

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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.