Home / 1,511.09-2,087.94-1,248.65

Finding the Fourth Proportional to 1,511.09, 2,087.94 and 1,248.65

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Solution

The fourth proportional to 1,511.09, 2,087.94 and 1,248.65 is: 1,725.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.09 : 2,087.94 = 1,248.65 : x
  2. Step 2: Convert to fraction form
    1,511.09/2,087.94 = 1,248.65/x
  3. Step 3: Cross multiply
    1,511.09x = 2,087.94 × 1,248.65
  4. Step 4: Simplify right side
    1,511.09x = 2,607,108.35
  5. Step 5: Solve for x
    x = 2,607,108.35/1,511.09
  6. Step 6: Final answer
    x = 1,725.32

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Half scale
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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.