Home / 3,518.80-5,281.20-1,854.08

Finding the Fourth Proportional to 3,518.80, 5,281.20 and 1,854.08

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Solution

The fourth proportional to 3,518.80, 5,281.20 and 1,854.08 is: 2,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.80 : 5,281.20 = 1,854.08 : x
  2. Step 2: Convert to fraction form
    3,518.80/5,281.20 = 1,854.08/x
  3. Step 3: Cross multiply
    3,518.80x = 5,281.20 × 1,854.08
  4. Step 4: Simplify right side
    3,518.80x = 9,791,767.30
  5. Step 5: Solve for x
    x = 9,791,767.30/3,518.80
  6. Step 6: Final answer
    x = 2,782.70

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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.