Home / 5,112.11-7,054.50-2,987.77

Finding the Fourth Proportional to 5,112.11, 7,054.50 and 2,987.77

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Solution

The fourth proportional to 5,112.11, 7,054.50 and 2,987.77 is: 4,123.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.11 : 7,054.50 = 2,987.77 : x
  2. Step 2: Convert to fraction form
    5,112.11/7,054.50 = 2,987.77/x
  3. Step 3: Cross multiply
    5,112.11x = 7,054.50 × 2,987.77
  4. Step 4: Simplify right side
    5,112.11x = 21,077,223.47
  5. Step 5: Solve for x
    x = 21,077,223.47/5,112.11
  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.