Home / 5,116.77-7,061.09-2,878.65

Finding the Fourth Proportional to 5,116.77, 7,061.09 and 2,878.65

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Solution

The fourth proportional to 5,116.77, 7,061.09 and 2,878.65 is: 3,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.77 : 7,061.09 = 2,878.65 : x
  2. Step 2: Convert to fraction form
    5,116.77/7,061.09 = 2,878.65/x
  3. Step 3: Cross multiply
    5,116.77x = 7,061.09 × 2,878.65
  4. Step 4: Simplify right side
    5,116.77x = 20,326,392.34
  5. Step 5: Solve for x
    x = 20,326,392.34/5,116.77
  6. Step 6: Final answer
    x = 3,972.50

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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.