Home / 8,780.89-13,171.15-2,455.60

Finding the Fourth Proportional to 8,780.89, 13,171.15 and 2,455.60

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Solution

The fourth proportional to 8,780.89, 13,171.15 and 2,455.60 is: 3,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.89 : 13,171.15 = 2,455.60 : x
  2. Step 2: Convert to fraction form
    8,780.89/13,171.15 = 2,455.60/x
  3. Step 3: Cross multiply
    8,780.89x = 13,171.15 × 2,455.60
  4. Step 4: Simplify right side
    8,780.89x = 32,343,075.94
  5. Step 5: Solve for x
    x = 32,343,075.94/8,780.89
  6. Step 6: Final answer
    x = 3,683.35

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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.