Home / 3,528.48-4,870.08-2,131.68

Finding the Fourth Proportional to 3,528.48, 4,870.08 and 2,131.68

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Solution

The fourth proportional to 3,528.48, 4,870.08 and 2,131.68 is: 2,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528.48 : 4,870.08 = 2,131.68 : x
  2. Step 2: Convert to fraction form
    3,528.48/4,870.08 = 2,131.68/x
  3. Step 3: Cross multiply
    3,528.48x = 4,870.08 × 2,131.68
  4. Step 4: Simplify right side
    3,528.48x = 10,381,452.13
  5. Step 5: Solve for x
    x = 10,381,452.13/3,528.48
  6. Step 6: Final answer
    x = 2,942.19

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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.