Home / 1,179.19-1,626.57-786.75

Finding the Fourth Proportional to 1,179.19, 1,626.57 and 786.75

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Solution

The fourth proportional to 1,179.19, 1,626.57 and 786.75 is: 1,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.19 : 1,626.57 = 786.75 : x
  2. Step 2: Convert to fraction form
    1,179.19/1,626.57 = 786.75/x
  3. Step 3: Cross multiply
    1,179.19x = 1,626.57 × 786.75
  4. Step 4: Simplify right side
    1,179.19x = 1,279,703.95
  5. Step 5: Solve for x
    x = 1,279,703.95/1,179.19
  6. Step 6: Final answer
    x = 1,085.24

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,180.19, 1,627.95 and 787.75
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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.