Home / 3,172.80-4,748.40-2,913.60

Finding the Fourth Proportional to 3,172.80, 4,748.40 and 2,913.60

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Solution

The fourth proportional to 3,172.80, 4,748.40 and 2,913.60 is: 4,360.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.80 : 4,748.40 = 2,913.60 : x
  2. Step 2: Convert to fraction form
    3,172.80/4,748.40 = 2,913.60/x
  3. Step 3: Cross multiply
    3,172.80x = 4,748.40 × 2,913.60
  4. Step 4: Simplify right side
    3,172.80x = 13,834,938.24
  5. Step 5: Solve for x
    x = 13,834,938.24/3,172.80
  6. Step 6: Final answer
    x = 4,360.48

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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.