Home / 3,515.60-5,269.80-1,953.20

Finding the Fourth Proportional to 3,515.60, 5,269.80 and 1,953.20

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Solution

The fourth proportional to 3,515.60, 5,269.80 and 1,953.20 is: 2,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.60 : 5,269.80 = 1,953.20 : x
  2. Step 2: Convert to fraction form
    3,515.60/5,269.80 = 1,953.20/x
  3. Step 3: Cross multiply
    3,515.60x = 5,269.80 × 1,953.20
  4. Step 4: Simplify right side
    3,515.60x = 10,292,973.36
  5. Step 5: Solve for x
    x = 10,292,973.36/3,515.60
  6. Step 6: Final answer
    x = 2,927.80

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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.