Home / 8,878.19-13,319.36-2,638.25

Finding the Fourth Proportional to 8,878.19, 13,319.36 and 2,638.25

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Solution

The fourth proportional to 8,878.19, 13,319.36 and 2,638.25 is: 3,957.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.19 : 13,319.36 = 2,638.25 : x
  2. Step 2: Convert to fraction form
    8,878.19/13,319.36 = 2,638.25/x
  3. Step 3: Cross multiply
    8,878.19x = 13,319.36 × 2,638.25
  4. Step 4: Simplify right side
    8,878.19x = 35,139,741.52
  5. Step 5: Solve for x
    x = 35,139,741.52/8,878.19
  6. Step 6: Final answer
    x = 3,957.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.