Home / 1,548.23-2,138.18-1,216.13

Finding the Fourth Proportional to 1,548.23, 2,138.18 and 1,216.13

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Solution

The fourth proportional to 1,548.23, 2,138.18 and 1,216.13 is: 1,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.23 : 2,138.18 = 1,216.13 : x
  2. Step 2: Convert to fraction form
    1,548.23/2,138.18 = 1,216.13/x
  3. Step 3: Cross multiply
    1,548.23x = 2,138.18 × 1,216.13
  4. Step 4: Simplify right side
    1,548.23x = 2,600,288.07
  5. Step 5: Solve for x
    x = 2,600,288.07/1,548.23
  6. Step 6: Final answer
    x = 1,679.53

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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.