Home / 2,217.39-3,058.28-1,430.07

Finding the Fourth Proportional to 2,217.39, 3,058.28 and 1,430.07

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Solution

The fourth proportional to 2,217.39, 3,058.28 and 1,430.07 is: 1,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.39 : 3,058.28 = 1,430.07 : x
  2. Step 2: Convert to fraction form
    2,217.39/3,058.28 = 1,430.07/x
  3. Step 3: Cross multiply
    2,217.39x = 3,058.28 × 1,430.07
  4. Step 4: Simplify right side
    2,217.39x = 4,373,554.48
  5. Step 5: Solve for x
    x = 4,373,554.48/2,217.39
  6. Step 6: Final answer
    x = 1,972.39

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Half scale
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Double scale
Find fourth proportional to 2,218.39, 3,059.66 and 1,431.07
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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.