Home / 5,403.45-7,456.95-2,980.71

Finding the Fourth Proportional to 5,403.45, 7,456.95 and 2,980.71

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Solution

The fourth proportional to 5,403.45, 7,456.95 and 2,980.71 is: 4,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.45 : 7,456.95 = 2,980.71 : x
  2. Step 2: Convert to fraction form
    5,403.45/7,456.95 = 2,980.71/x
  3. Step 3: Cross multiply
    5,403.45x = 7,456.95 × 2,980.71
  4. Step 4: Simplify right side
    5,403.45x = 22,227,005.43
  5. Step 5: Solve for x
    x = 22,227,005.43/5,403.45
  6. Step 6: Final answer
    x = 4,113.48

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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.