Home / 1,565.98-2,161.11-867.36

Finding the Fourth Proportional to 1,565.98, 2,161.11 and 867.36

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Solution

The fourth proportional to 1,565.98, 2,161.11 and 867.36 is: 1,196.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.98 : 2,161.11 = 867.36 : x
  2. Step 2: Convert to fraction form
    1,565.98/2,161.11 = 867.36/x
  3. Step 3: Cross multiply
    1,565.98x = 2,161.11 × 867.36
  4. Step 4: Simplify right side
    1,565.98x = 1,874,460.37
  5. Step 5: Solve for x
    x = 1,874,460.37/1,565.98
  6. Step 6: Final answer
    x = 1,196.99

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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.