Home / 2,765.32-3,815.78-1,646.30

Finding the Fourth Proportional to 2,765.32, 3,815.78 and 1,646.30

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Solution

The fourth proportional to 2,765.32, 3,815.78 and 1,646.30 is: 2,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.32 : 3,815.78 = 1,646.30 : x
  2. Step 2: Convert to fraction form
    2,765.32/3,815.78 = 1,646.30/x
  3. Step 3: Cross multiply
    2,765.32x = 3,815.78 × 1,646.30
  4. Step 4: Simplify right side
    2,765.32x = 6,281,918.61
  5. Step 5: Solve for x
    x = 6,281,918.61/2,765.32
  6. Step 6: Final answer
    x = 2,271.68

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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.