Home / 3,545.47-4,891.91-2,980.45

Finding the Fourth Proportional to 3,545.47, 4,891.91 and 2,980.45

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Solution

The fourth proportional to 3,545.47, 4,891.91 and 2,980.45 is: 4,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.47 : 4,891.91 = 2,980.45 : x
  2. Step 2: Convert to fraction form
    3,545.47/4,891.91 = 2,980.45/x
  3. Step 3: Cross multiply
    3,545.47x = 4,891.91 × 2,980.45
  4. Step 4: Simplify right side
    3,545.47x = 14,580,093.16
  5. Step 5: Solve for x
    x = 14,580,093.16/3,545.47
  6. Step 6: Final answer
    x = 4,112.32

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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.