Home / 1,690.39-2,332.61-944.29

Finding the Fourth Proportional to 1,690.39, 2,332.61 and 944.29

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Solution

The fourth proportional to 1,690.39, 2,332.61 and 944.29 is: 1,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.39 : 2,332.61 = 944.29 : x
  2. Step 2: Convert to fraction form
    1,690.39/2,332.61 = 944.29/x
  3. Step 3: Cross multiply
    1,690.39x = 2,332.61 × 944.29
  4. Step 4: Simplify right side
    1,690.39x = 2,202,655.58
  5. Step 5: Solve for x
    x = 2,202,655.58/1,690.39
  6. Step 6: Final answer
    x = 1,303.05

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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.