Home / 1,578.10-2,174.34-1,053.22

Finding the Fourth Proportional to 1,578.10, 2,174.34 and 1,053.22

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Solution

The fourth proportional to 1,578.10, 2,174.34 and 1,053.22 is: 1,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.10 : 2,174.34 = 1,053.22 : x
  2. Step 2: Convert to fraction form
    1,578.10/2,174.34 = 1,053.22/x
  3. Step 3: Cross multiply
    1,578.10x = 2,174.34 × 1,053.22
  4. Step 4: Simplify right side
    1,578.10x = 2,290,058.37
  5. Step 5: Solve for x
    x = 2,290,058.37/1,578.10
  6. Step 6: Final answer
    x = 1,451.15

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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.