Home / 1,438.04-2,156.61-953.66

Finding the Fourth Proportional to 1,438.04, 2,156.61 and 953.66

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Solution

The fourth proportional to 1,438.04, 2,156.61 and 953.66 is: 1,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.04 : 2,156.61 = 953.66 : x
  2. Step 2: Convert to fraction form
    1,438.04/2,156.61 = 953.66/x
  3. Step 3: Cross multiply
    1,438.04x = 2,156.61 × 953.66
  4. Step 4: Simplify right side
    1,438.04x = 2,056,672.69
  5. Step 5: Solve for x
    x = 2,056,672.69/1,438.04
  6. Step 6: Final answer
    x = 1,430.19

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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.