Home / 2,170.69-2,995.58-1,319.69

Finding the Fourth Proportional to 2,170.69, 2,995.58 and 1,319.69

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Solution

The fourth proportional to 2,170.69, 2,995.58 and 1,319.69 is: 1,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.69 : 2,995.58 = 1,319.69 : x
  2. Step 2: Convert to fraction form
    2,170.69/2,995.58 = 1,319.69/x
  3. Step 3: Cross multiply
    2,170.69x = 2,995.58 × 1,319.69
  4. Step 4: Simplify right side
    2,170.69x = 3,953,236.97
  5. Step 5: Solve for x
    x = 3,953,236.97/2,170.69
  6. Step 6: Final answer
    x = 1,821.19

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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.