Home / 4,987.28-6,887.40-4,106

Finding the Fourth Proportional to 4,987.28, 6,887.40 and 4,106

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Solution

The fourth proportional to 4,987.28, 6,887.40 and 4,106 is: 5,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.28 : 6,887.40 = 4,106 : x
  2. Step 2: Convert to fraction form
    4,987.28/6,887.40 = 4,106/x
  3. Step 3: Cross multiply
    4,987.28x = 6,887.40 × 4,106
  4. Step 4: Simplify right side
    4,987.28x = 28,279,664.40
  5. Step 5: Solve for x
    x = 28,279,664.40/4,987.28
  6. Step 6: Final answer
    x = 5,670.36

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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.