Home / 3,438.48-5,157.72-1,490.23

Finding the Fourth Proportional to 3,438.48, 5,157.72 and 1,490.23

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Solution

The fourth proportional to 3,438.48, 5,157.72 and 1,490.23 is: 2,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.48 : 5,157.72 = 1,490.23 : x
  2. Step 2: Convert to fraction form
    3,438.48/5,157.72 = 1,490.23/x
  3. Step 3: Cross multiply
    3,438.48x = 5,157.72 × 1,490.23
  4. Step 4: Simplify right side
    3,438.48x = 7,686,176.18
  5. Step 5: Solve for x
    x = 7,686,176.18/3,438.48
  6. Step 6: Final answer
    x = 2,235.34

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1.5x scale

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.