Home / 5,115.21-7,058.52-2,877.18

Finding the Fourth Proportional to 5,115.21, 7,058.52 and 2,877.18

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Solution

The fourth proportional to 5,115.21, 7,058.52 and 2,877.18 is: 3,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.21 : 7,058.52 = 2,877.18 : x
  2. Step 2: Convert to fraction form
    5,115.21/7,058.52 = 2,877.18/x
  3. Step 3: Cross multiply
    5,115.21x = 7,058.52 × 2,877.18
  4. Step 4: Simplify right side
    5,115.21x = 20,308,632.57
  5. Step 5: Solve for x
    x = 20,308,632.57/5,115.21
  6. Step 6: Final answer
    x = 3,970.24

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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.