Home / 2,319.48-3,477.63-857.85

Finding the Fourth Proportional to 2,319.48, 3,477.63 and 857.85

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Solution

The fourth proportional to 2,319.48, 3,477.63 and 857.85 is: 1,286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.48 : 3,477.63 = 857.85 : x
  2. Step 2: Convert to fraction form
    2,319.48/3,477.63 = 857.85/x
  3. Step 3: Cross multiply
    2,319.48x = 3,477.63 × 857.85
  4. Step 4: Simplify right side
    2,319.48x = 2,983,284.90
  5. Step 5: Solve for x
    x = 2,983,284.90/2,319.48
  6. Step 6: Final answer
    x = 1,286.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.