Home / 5,112.96-7,055.18-2,987.98

Finding the Fourth Proportional to 5,112.96, 7,055.18 and 2,987.98

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Solution

The fourth proportional to 5,112.96, 7,055.18 and 2,987.98 is: 4,123.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.96 : 7,055.18 = 2,987.98 : x
  2. Step 2: Convert to fraction form
    5,112.96/7,055.18 = 2,987.98/x
  3. Step 3: Cross multiply
    5,112.96x = 7,055.18 × 2,987.98
  4. Step 4: Simplify right side
    5,112.96x = 21,080,736.74
  5. Step 5: Solve for x
    x = 21,080,736.74/5,112.96
  6. Step 6: Final answer
    x = 4,123.00

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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.