Home / 3,557.20-4,908.09-2,140.40

Finding the Fourth Proportional to 3,557.20, 4,908.09 and 2,140.40

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Solution

The fourth proportional to 3,557.20, 4,908.09 and 2,140.40 is: 2,953.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.20 : 4,908.09 = 2,140.40 : x
  2. Step 2: Convert to fraction form
    3,557.20/4,908.09 = 2,140.40/x
  3. Step 3: Cross multiply
    3,557.20x = 4,908.09 × 2,140.40
  4. Step 4: Simplify right side
    3,557.20x = 10,505,275.84
  5. Step 5: Solve for x
    x = 10,505,275.84/3,557.20
  6. Step 6: Final answer
    x = 2,953.24

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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.