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Finding the Fourth Proportional to 3,188.99, 4,400.48 and 1,862.53

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Solution

The fourth proportional to 3,188.99, 4,400.48 and 1,862.53 is: 2,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.99 : 4,400.48 = 1,862.53 : x
  2. Step 2: Convert to fraction form
    3,188.99/4,400.48 = 1,862.53/x
  3. Step 3: Cross multiply
    3,188.99x = 4,400.48 × 1,862.53
  4. Step 4: Simplify right side
    3,188.99x = 8,196,019.67
  5. Step 5: Solve for x
    x = 8,196,019.67/3,188.99
  6. Step 6: Final answer
    x = 2,570.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.