Home / 1,666.80-2,299.32-1,135.44

Finding the Fourth Proportional to 1,666.80, 2,299.32 and 1,135.44

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Solution

The fourth proportional to 1,666.80, 2,299.32 and 1,135.44 is: 1,566.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.80 : 2,299.32 = 1,135.44 : x
  2. Step 2: Convert to fraction form
    1,666.80/2,299.32 = 1,135.44/x
  3. Step 3: Cross multiply
    1,666.80x = 2,299.32 × 1,135.44
  4. Step 4: Simplify right side
    1,666.80x = 2,610,739.90
  5. Step 5: Solve for x
    x = 2,610,739.90/1,666.80
  6. Step 6: Final answer
    x = 1,566.32

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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.