Home / 1,550.01-2,135.84-1,440.63

Finding the Fourth Proportional to 1,550.01, 2,135.84 and 1,440.63

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Solution

The fourth proportional to 1,550.01, 2,135.84 and 1,440.63 is: 1,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.01 : 2,135.84 = 1,440.63 : x
  2. Step 2: Convert to fraction form
    1,550.01/2,135.84 = 1,440.63/x
  3. Step 3: Cross multiply
    1,550.01x = 2,135.84 × 1,440.63
  4. Step 4: Simplify right side
    1,550.01x = 3,076,947.98
  5. Step 5: Solve for x
    x = 3,076,947.98/1,550.01
  6. Step 6: Final answer
    x = 1,985.11

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Half scale
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Double scale
Find fourth proportional to 1,551.01, 2,137.21 and 1,441.63
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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.