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Finding the Fourth Proportional to 3,061.10, 4,590.48 and 980.66

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Solution

The fourth proportional to 3,061.10, 4,590.48 and 980.66 is: 1,470.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,061.10 : 4,590.48 = 980.66 : x
  2. Step 2: Convert to fraction form
    3,061.10/4,590.48 = 980.66/x
  3. Step 3: Cross multiply
    3,061.10x = 4,590.48 × 980.66
  4. Step 4: Simplify right side
    3,061.10x = 4,501,700.12
  5. Step 5: Solve for x
    x = 4,501,700.12/3,061.10
  6. Step 6: Final answer
    x = 1,470.62

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1.5x scale

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.