Home / 3,557.15-4,908.72-1,985.23

Finding the Fourth Proportional to 3,557.15, 4,908.72 and 1,985.23

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Solution

The fourth proportional to 3,557.15, 4,908.72 and 1,985.23 is: 2,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.15 : 4,908.72 = 1,985.23 : x
  2. Step 2: Convert to fraction form
    3,557.15/4,908.72 = 1,985.23/x
  3. Step 3: Cross multiply
    3,557.15x = 4,908.72 × 1,985.23
  4. Step 4: Simplify right side
    3,557.15x = 9,744,928.28
  5. Step 5: Solve for x
    x = 9,744,928.28/3,557.15
  6. Step 6: Final answer
    x = 2,739.53

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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.