Home / 1,465.48-2,189.81-1,438.12

Finding the Fourth Proportional to 1,465.48, 2,189.81 and 1,438.12

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Solution

The fourth proportional to 1,465.48, 2,189.81 and 1,438.12 is: 2,148.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.48 : 2,189.81 = 1,438.12 : x
  2. Step 2: Convert to fraction form
    1,465.48/2,189.81 = 1,438.12/x
  3. Step 3: Cross multiply
    1,465.48x = 2,189.81 × 1,438.12
  4. Step 4: Simplify right side
    1,465.48x = 3,149,209.56
  5. Step 5: Solve for x
    x = 3,149,209.56/1,465.48
  6. Step 6: Final answer
    x = 2,148.93

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1.5x scale

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.