Home / 1,645.14-2,270.34-899.16

Finding the Fourth Proportional to 1,645.14, 2,270.34 and 899.16

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Solution

The fourth proportional to 1,645.14, 2,270.34 and 899.16 is: 1,240.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.14 : 2,270.34 = 899.16 : x
  2. Step 2: Convert to fraction form
    1,645.14/2,270.34 = 899.16/x
  3. Step 3: Cross multiply
    1,645.14x = 2,270.34 × 899.16
  4. Step 4: Simplify right side
    1,645.14x = 2,041,398.91
  5. Step 5: Solve for x
    x = 2,041,398.91/1,645.14
  6. Step 6: Final answer
    x = 1,240.87

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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.