Home / 2,557.08-3,528.81-1,438.11

Finding the Fourth Proportional to 2,557.08, 3,528.81 and 1,438.11

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Solution

The fourth proportional to 2,557.08, 3,528.81 and 1,438.11 is: 1,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.08 : 3,528.81 = 1,438.11 : x
  2. Step 2: Convert to fraction form
    2,557.08/3,528.81 = 1,438.11/x
  3. Step 3: Cross multiply
    2,557.08x = 3,528.81 × 1,438.11
  4. Step 4: Simplify right side
    2,557.08x = 5,074,816.95
  5. Step 5: Solve for x
    x = 5,074,816.95/2,557.08
  6. Step 6: Final answer
    x = 1,984.61

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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.