Home / 2,101.04-2,899.69-1,216.85

Finding the Fourth Proportional to 2,101.04, 2,899.69 and 1,216.85

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Solution

The fourth proportional to 2,101.04, 2,899.69 and 1,216.85 is: 1,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.04 : 2,899.69 = 1,216.85 : x
  2. Step 2: Convert to fraction form
    2,101.04/2,899.69 = 1,216.85/x
  3. Step 3: Cross multiply
    2,101.04x = 2,899.69 × 1,216.85
  4. Step 4: Simplify right side
    2,101.04x = 3,528,473.28
  5. Step 5: Solve for x
    x = 3,528,473.28/2,101.04
  6. Step 6: Final answer
    x = 1,679.40

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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.