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Finding the Fourth Proportional to 3,545.03, 4,891.31 and 2,980.01

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Solution

The fourth proportional to 3,545.03, 4,891.31 and 2,980.01 is: 4,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.03 : 4,891.31 = 2,980.01 : x
  2. Step 2: Convert to fraction form
    3,545.03/4,891.31 = 2,980.01/x
  3. Step 3: Cross multiply
    3,545.03x = 4,891.31 × 2,980.01
  4. Step 4: Simplify right side
    3,545.03x = 14,576,150.04
  5. Step 5: Solve for x
    x = 14,576,150.04/3,545.03
  6. Step 6: Final answer
    x = 4,111.71

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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.