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Finding the Fourth Proportional to 1,601.92, 2,210.40 and 903.28

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Solution

The fourth proportional to 1,601.92, 2,210.40 and 903.28 is: 1,246.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.92 : 2,210.40 = 903.28 : x
  2. Step 2: Convert to fraction form
    1,601.92/2,210.40 = 903.28/x
  3. Step 3: Cross multiply
    1,601.92x = 2,210.40 × 903.28
  4. Step 4: Simplify right side
    1,601.92x = 1,996,610.11
  5. Step 5: Solve for x
    x = 1,996,610.11/1,601.92
  6. Step 6: Final answer
    x = 1,246.39

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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.