Home / 2,372.21-3,275.18-2,123.09

Finding the Fourth Proportional to 2,372.21, 3,275.18 and 2,123.09

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Solution

The fourth proportional to 2,372.21, 3,275.18 and 2,123.09 is: 2,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.21 : 3,275.18 = 2,123.09 : x
  2. Step 2: Convert to fraction form
    2,372.21/3,275.18 = 2,123.09/x
  3. Step 3: Cross multiply
    2,372.21x = 3,275.18 × 2,123.09
  4. Step 4: Simplify right side
    2,372.21x = 6,953,515.40
  5. Step 5: Solve for x
    x = 6,953,515.40/2,372.21
  6. Step 6: Final answer
    x = 2,931.25

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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.