Home / 1,690.38-2,332.50-944.30

Finding the Fourth Proportional to 1,690.38, 2,332.50 and 944.30

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Solution

The fourth proportional to 1,690.38, 2,332.50 and 944.30 is: 1,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.38 : 2,332.50 = 944.30 : x
  2. Step 2: Convert to fraction form
    1,690.38/2,332.50 = 944.30/x
  3. Step 3: Cross multiply
    1,690.38x = 2,332.50 × 944.30
  4. Step 4: Simplify right side
    1,690.38x = 2,202,582.04
  5. Step 5: Solve for x
    x = 2,202,582.04/1,690.38
  6. Step 6: Final answer
    x = 1,303.01

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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.