Home / 3,572.70-4,931.55-2,157.18

Finding the Fourth Proportional to 3,572.70, 4,931.55 and 2,157.18

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Solution

The fourth proportional to 3,572.70, 4,931.55 and 2,157.18 is: 2,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.70 : 4,931.55 = 2,157.18 : x
  2. Step 2: Convert to fraction form
    3,572.70/4,931.55 = 2,157.18/x
  3. Step 3: Cross multiply
    3,572.70x = 4,931.55 × 2,157.18
  4. Step 4: Simplify right side
    3,572.70x = 10,638,241.03
  5. Step 5: Solve for x
    x = 10,638,241.03/3,572.70
  6. Step 6: Final answer
    x = 2,977.65

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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.