Home / 1,605.08-2,215.07-896.91

Finding the Fourth Proportional to 1,605.08, 2,215.07 and 896.91

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Solution

The fourth proportional to 1,605.08, 2,215.07 and 896.91 is: 1,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.08 : 2,215.07 = 896.91 : x
  2. Step 2: Convert to fraction form
    1,605.08/2,215.07 = 896.91/x
  3. Step 3: Cross multiply
    1,605.08x = 2,215.07 × 896.91
  4. Step 4: Simplify right side
    1,605.08x = 1,986,713.95
  5. Step 5: Solve for x
    x = 1,986,713.95/1,605.08
  6. Step 6: Final answer
    x = 1,237.77

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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.