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Finding the Fourth Proportional to 1,619.98, 2,235.48 and 956.59

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Solution

The fourth proportional to 1,619.98, 2,235.48 and 956.59 is: 1,320.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.98 : 2,235.48 = 956.59 : x
  2. Step 2: Convert to fraction form
    1,619.98/2,235.48 = 956.59/x
  3. Step 3: Cross multiply
    1,619.98x = 2,235.48 × 956.59
  4. Step 4: Simplify right side
    1,619.98x = 2,138,437.81
  5. Step 5: Solve for x
    x = 2,138,437.81/1,619.98
  6. Step 6: Final answer
    x = 1,320.04

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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.