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Finding the Fourth Proportional to 4,571.64, 6,868.40 and 2,931.40

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Solution

The fourth proportional to 4,571.64, 6,868.40 and 2,931.40 is: 4,404.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,571.64 : 6,868.40 = 2,931.40 : x
  2. Step 2: Convert to fraction form
    4,571.64/6,868.40 = 2,931.40/x
  3. Step 3: Cross multiply
    4,571.64x = 6,868.40 × 2,931.40
  4. Step 4: Simplify right side
    4,571.64x = 20,134,027.76
  5. Step 5: Solve for x
    x = 20,134,027.76/4,571.64
  6. Step 6: Final answer
    x = 4,404.11

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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.