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Finding the Fourth Proportional to 2,852.64, 3,931.49 and 2,065.32

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Solution

The fourth proportional to 2,852.64, 3,931.49 and 2,065.32 is: 2,846.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.64 : 3,931.49 = 2,065.32 : x
  2. Step 2: Convert to fraction form
    2,852.64/3,931.49 = 2,065.32/x
  3. Step 3: Cross multiply
    2,852.64x = 3,931.49 × 2,065.32
  4. Step 4: Simplify right side
    2,852.64x = 8,119,790.09
  5. Step 5: Solve for x
    x = 8,119,790.09/2,852.64
  6. Step 6: Final answer
    x = 2,846.41

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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.