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Finding the Fourth Proportional to 3,573.68, 4,931.93 and 2,157.71

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Solution

The fourth proportional to 3,573.68, 4,931.93 and 2,157.71 is: 2,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,573.68 : 4,931.93 = 2,157.71 : x
  2. Step 2: Convert to fraction form
    3,573.68/4,931.93 = 2,157.71/x
  3. Step 3: Cross multiply
    3,573.68x = 4,931.93 × 2,157.71
  4. Step 4: Simplify right side
    3,573.68x = 10,641,655.41
  5. Step 5: Solve for x
    x = 10,641,655.41/3,573.68
  6. Step 6: Final answer
    x = 2,977.79

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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.