Home / 1,315.26-1,972.89-1,235.07

Finding the Fourth Proportional to 1,315.26, 1,972.89 and 1,235.07

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Solution

The fourth proportional to 1,315.26, 1,972.89 and 1,235.07 is: 1,852.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.26 : 1,972.89 = 1,235.07 : x
  2. Step 2: Convert to fraction form
    1,315.26/1,972.89 = 1,235.07/x
  3. Step 3: Cross multiply
    1,315.26x = 1,972.89 × 1,235.07
  4. Step 4: Simplify right side
    1,315.26x = 2,436,657.25
  5. Step 5: Solve for x
    x = 2,436,657.25/1,315.26
  6. Step 6: Final answer
    x = 1,852.61

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.