Home / 1,621.52-2,237.56-913.49

Finding the Fourth Proportional to 1,621.52, 2,237.56 and 913.49

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Solution

The fourth proportional to 1,621.52, 2,237.56 and 913.49 is: 1,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.52 : 2,237.56 = 913.49 : x
  2. Step 2: Convert to fraction form
    1,621.52/2,237.56 = 913.49/x
  3. Step 3: Cross multiply
    1,621.52x = 2,237.56 × 913.49
  4. Step 4: Simplify right side
    1,621.52x = 2,043,988.68
  5. Step 5: Solve for x
    x = 2,043,988.68/1,621.52
  6. Step 6: Final answer
    x = 1,260.54

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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.