Home / 2,143.08-2,957.84-1,357.56

Finding the Fourth Proportional to 2,143.08, 2,957.84 and 1,357.56

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Solution

The fourth proportional to 2,143.08, 2,957.84 and 1,357.56 is: 1,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.08 : 2,957.84 = 1,357.56 : x
  2. Step 2: Convert to fraction form
    2,143.08/2,957.84 = 1,357.56/x
  3. Step 3: Cross multiply
    2,143.08x = 2,957.84 × 1,357.56
  4. Step 4: Simplify right side
    2,143.08x = 4,015,445.27
  5. Step 5: Solve for x
    x = 4,015,445.27/2,143.08
  6. Step 6: Final answer
    x = 1,873.68

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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.