Home / 5,117.58-7,061.99-2,879.40

Finding the Fourth Proportional to 5,117.58, 7,061.99 and 2,879.40

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Solution

The fourth proportional to 5,117.58, 7,061.99 and 2,879.40 is: 3,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.58 : 7,061.99 = 2,879.40 : x
  2. Step 2: Convert to fraction form
    5,117.58/7,061.99 = 2,879.40/x
  3. Step 3: Cross multiply
    5,117.58x = 7,061.99 × 2,879.40
  4. Step 4: Simplify right side
    5,117.58x = 20,334,266.37
  5. Step 5: Solve for x
    x = 20,334,266.37/5,117.58
  6. Step 6: Final answer
    x = 3,973.41

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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.