Home / 5,117.48-7,061.86-2,879.40

Finding the Fourth Proportional to 5,117.48, 7,061.86 and 2,879.40

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Solution

The fourth proportional to 5,117.48, 7,061.86 and 2,879.40 is: 3,973.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.48 : 7,061.86 = 2,879.40 : x
  2. Step 2: Convert to fraction form
    5,117.48/7,061.86 = 2,879.40/x
  3. Step 3: Cross multiply
    5,117.48x = 7,061.86 × 2,879.40
  4. Step 4: Simplify right side
    5,117.48x = 20,333,919.68
  5. Step 5: Solve for x
    x = 20,333,919.68/5,117.48
  6. Step 6: Final answer
    x = 3,973.42

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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.