Home / 3,681.48-5,520.96-1,215.72

Finding the Fourth Proportional to 3,681.48, 5,520.96 and 1,215.72

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Solution

The fourth proportional to 3,681.48, 5,520.96 and 1,215.72 is: 1,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.48 : 5,520.96 = 1,215.72 : x
  2. Step 2: Convert to fraction form
    3,681.48/5,520.96 = 1,215.72/x
  3. Step 3: Cross multiply
    3,681.48x = 5,520.96 × 1,215.72
  4. Step 4: Simplify right side
    3,681.48x = 6,711,941.49
  5. Step 5: Solve for x
    x = 6,711,941.49/3,681.48
  6. Step 6: Final answer
    x = 1,823.16

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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.