Home / 1,707.12-2,355.74-961.20

Finding the Fourth Proportional to 1,707.12, 2,355.74 and 961.20

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Solution

The fourth proportional to 1,707.12, 2,355.74 and 961.20 is: 1,326.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.12 : 2,355.74 = 961.20 : x
  2. Step 2: Convert to fraction form
    1,707.12/2,355.74 = 961.20/x
  3. Step 3: Cross multiply
    1,707.12x = 2,355.74 × 961.20
  4. Step 4: Simplify right side
    1,707.12x = 2,264,337.29
  5. Step 5: Solve for x
    x = 2,264,337.29/1,707.12
  6. Step 6: Final answer
    x = 1,326.41

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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.