Home / 1,465.10-2,193.60-1,138.40

Finding the Fourth Proportional to 1,465.10, 2,193.60 and 1,138.40

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Solution

The fourth proportional to 1,465.10, 2,193.60 and 1,138.40 is: 1,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.10 : 2,193.60 = 1,138.40 : x
  2. Step 2: Convert to fraction form
    1,465.10/2,193.60 = 1,138.40/x
  3. Step 3: Cross multiply
    1,465.10x = 2,193.60 × 1,138.40
  4. Step 4: Simplify right side
    1,465.10x = 2,497,194.24
  5. Step 5: Solve for x
    x = 2,497,194.24/1,465.10
  6. Step 6: Final answer
    x = 1,704.45

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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.