Home / 2,138.14-2,947.88-1,753.45

Finding the Fourth Proportional to 2,138.14, 2,947.88 and 1,753.45

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Solution

The fourth proportional to 2,138.14, 2,947.88 and 1,753.45 is: 2,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.14 : 2,947.88 = 1,753.45 : x
  2. Step 2: Convert to fraction form
    2,138.14/2,947.88 = 1,753.45/x
  3. Step 3: Cross multiply
    2,138.14x = 2,947.88 × 1,753.45
  4. Step 4: Simplify right side
    2,138.14x = 5,168,945.45
  5. Step 5: Solve for x
    x = 5,168,945.45/2,138.14
  6. Step 6: Final answer
    x = 2,417.50

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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.