Home / 1,437.19-2,159.43-917.44

Finding the Fourth Proportional to 1,437.19, 2,159.43 and 917.44

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Solution

The fourth proportional to 1,437.19, 2,159.43 and 917.44 is: 1,378.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.19 : 2,159.43 = 917.44 : x
  2. Step 2: Convert to fraction form
    1,437.19/2,159.43 = 917.44/x
  3. Step 3: Cross multiply
    1,437.19x = 2,159.43 × 917.44
  4. Step 4: Simplify right side
    1,437.19x = 1,981,147.46
  5. Step 5: Solve for x
    x = 1,981,147.46/1,437.19
  6. Step 6: Final answer
    x = 1,378.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.