Home / 2,557.64-3,529.32-1,438.49

Finding the Fourth Proportional to 2,557.64, 3,529.32 and 1,438.49

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Solution

The fourth proportional to 2,557.64, 3,529.32 and 1,438.49 is: 1,984.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.64 : 3,529.32 = 1,438.49 : x
  2. Step 2: Convert to fraction form
    2,557.64/3,529.32 = 1,438.49/x
  3. Step 3: Cross multiply
    2,557.64x = 3,529.32 × 1,438.49
  4. Step 4: Simplify right side
    2,557.64x = 5,076,891.53
  5. Step 5: Solve for x
    x = 5,076,891.53/2,557.64
  6. Step 6: Final answer
    x = 1,984.99

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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.