Home / 1,707.19-2,355.90-961.15

Finding the Fourth Proportional to 1,707.19, 2,355.90 and 961.15

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Solution

The fourth proportional to 1,707.19, 2,355.90 and 961.15 is: 1,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.19 : 2,355.90 = 961.15 : x
  2. Step 2: Convert to fraction form
    1,707.19/2,355.90 = 961.15/x
  3. Step 3: Cross multiply
    1,707.19x = 2,355.90 × 961.15
  4. Step 4: Simplify right side
    1,707.19x = 2,264,373.29
  5. Step 5: Solve for x
    x = 2,264,373.29/1,707.19
  6. Step 6: Final answer
    x = 1,326.37

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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.