Home / 1,168.20-1,748.70-1,038.60

Finding the Fourth Proportional to 1,168.20, 1,748.70 and 1,038.60

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Solution

The fourth proportional to 1,168.20, 1,748.70 and 1,038.60 is: 1,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.20 : 1,748.70 = 1,038.60 : x
  2. Step 2: Convert to fraction form
    1,168.20/1,748.70 = 1,038.60/x
  3. Step 3: Cross multiply
    1,168.20x = 1,748.70 × 1,038.60
  4. Step 4: Simplify right side
    1,168.20x = 1,816,199.82
  5. Step 5: Solve for x
    x = 1,816,199.82/1,168.20
  6. Step 6: Final answer
    x = 1,554.70

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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.