Home / 1,690.31-2,332.51-944.30

Finding the Fourth Proportional to 1,690.31, 2,332.51 and 944.30

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Solution

The fourth proportional to 1,690.31, 2,332.51 and 944.30 is: 1,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.31 : 2,332.51 = 944.30 : x
  2. Step 2: Convert to fraction form
    1,690.31/2,332.51 = 944.30/x
  3. Step 3: Cross multiply
    1,690.31x = 2,332.51 × 944.30
  4. Step 4: Simplify right side
    1,690.31x = 2,202,589.19
  5. Step 5: Solve for x
    x = 2,202,589.19/1,690.31
  6. Step 6: Final answer
    x = 1,303.07

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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.