Home / 1,690.16-2,332.34-944.12

Finding the Fourth Proportional to 1,690.16, 2,332.34 and 944.12

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Solution

The fourth proportional to 1,690.16, 2,332.34 and 944.12 is: 1,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.16 : 2,332.34 = 944.12 : x
  2. Step 2: Convert to fraction form
    1,690.16/2,332.34 = 944.12/x
  3. Step 3: Cross multiply
    1,690.16x = 2,332.34 × 944.12
  4. Step 4: Simplify right side
    1,690.16x = 2,202,008.84
  5. Step 5: Solve for x
    x = 2,202,008.84/1,690.16
  6. Step 6: Final answer
    x = 1,302.84

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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.