Home / 1,690.12-2,327.70-1,569.16

Finding the Fourth Proportional to 1,690.12, 2,327.70 and 1,569.16

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Solution

The fourth proportional to 1,690.12, 2,327.70 and 1,569.16 is: 2,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.12 : 2,327.70 = 1,569.16 : x
  2. Step 2: Convert to fraction form
    1,690.12/2,327.70 = 1,569.16/x
  3. Step 3: Cross multiply
    1,690.12x = 2,327.70 × 1,569.16
  4. Step 4: Simplify right side
    1,690.12x = 3,652,533.73
  5. Step 5: Solve for x
    x = 3,652,533.73/1,690.12
  6. Step 6: Final answer
    x = 2,161.11

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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.