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Finding the Fourth Proportional to 5,510.78, 7,601.90 and 3,490.55

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Solution

The fourth proportional to 5,510.78, 7,601.90 and 3,490.55 is: 4,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,510.78 : 7,601.90 = 3,490.55 : x
  2. Step 2: Convert to fraction form
    5,510.78/7,601.90 = 3,490.55/x
  3. Step 3: Cross multiply
    5,510.78x = 7,601.90 × 3,490.55
  4. Step 4: Simplify right side
    5,510.78x = 26,534,756.58
  5. Step 5: Solve for x
    x = 26,534,756.58/5,510.78
  6. Step 6: Final answer
    x = 4,815.06

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1.5x scale

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.