Home / 1,432.21-2,131.16-1,427.35

Finding the Fourth Proportional to 1,432.21, 2,131.16 and 1,427.35

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Solution

The fourth proportional to 1,432.21, 2,131.16 and 1,427.35 is: 2,123.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.21 : 2,131.16 = 1,427.35 : x
  2. Step 2: Convert to fraction form
    1,432.21/2,131.16 = 1,427.35/x
  3. Step 3: Cross multiply
    1,432.21x = 2,131.16 × 1,427.35
  4. Step 4: Simplify right side
    1,432.21x = 3,041,911.23
  5. Step 5: Solve for x
    x = 3,041,911.23/1,432.21
  6. Step 6: Final answer
    x = 2,123.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.