Home / 1,638.26-2,260.14-975.14

Finding the Fourth Proportional to 1,638.26, 2,260.14 and 975.14

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Solution

The fourth proportional to 1,638.26, 2,260.14 and 975.14 is: 1,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.26 : 2,260.14 = 975.14 : x
  2. Step 2: Convert to fraction form
    1,638.26/2,260.14 = 975.14/x
  3. Step 3: Cross multiply
    1,638.26x = 2,260.14 × 975.14
  4. Step 4: Simplify right side
    1,638.26x = 2,203,952.92
  5. Step 5: Solve for x
    x = 2,203,952.92/1,638.26
  6. Step 6: Final answer
    x = 1,345.30

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Double scale
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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.