Home / 2,187.68-3,018.26-1,402.18

Finding the Fourth Proportional to 2,187.68, 3,018.26 and 1,402.18

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Solution

The fourth proportional to 2,187.68, 3,018.26 and 1,402.18 is: 1,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.68 : 3,018.26 = 1,402.18 : x
  2. Step 2: Convert to fraction form
    2,187.68/3,018.26 = 1,402.18/x
  3. Step 3: Cross multiply
    2,187.68x = 3,018.26 × 1,402.18
  4. Step 4: Simplify right side
    2,187.68x = 4,232,139.77
  5. Step 5: Solve for x
    x = 4,232,139.77/2,187.68
  6. Step 6: Final answer
    x = 1,934.54

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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.