Home / 1,605.15-2,214.95-1,231.34

Finding the Fourth Proportional to 1,605.15, 2,214.95 and 1,231.34

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Solution

The fourth proportional to 1,605.15, 2,214.95 and 1,231.34 is: 1,699.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.15 : 2,214.95 = 1,231.34 : x
  2. Step 2: Convert to fraction form
    1,605.15/2,214.95 = 1,231.34/x
  3. Step 3: Cross multiply
    1,605.15x = 2,214.95 × 1,231.34
  4. Step 4: Simplify right side
    1,605.15x = 2,727,339.30
  5. Step 5: Solve for x
    x = 2,727,339.30/1,605.15
  6. Step 6: Final answer
    x = 1,699.12

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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.