Home / 3,530.04-5,291.28-1,680

Finding the Fourth Proportional to 3,530.04, 5,291.28 and 1,680

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Solution

The fourth proportional to 3,530.04, 5,291.28 and 1,680 is: 2,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.04 : 5,291.28 = 1,680 : x
  2. Step 2: Convert to fraction form
    3,530.04/5,291.28 = 1,680/x
  3. Step 3: Cross multiply
    3,530.04x = 5,291.28 × 1,680
  4. Step 4: Simplify right side
    3,530.04x = 8,889,350.40
  5. Step 5: Solve for x
    x = 8,889,350.40/3,530.04
  6. Step 6: Final answer
    x = 2,518.20

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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.