Home / 5,438.49-8,158.32-1,739.40

Finding the Fourth Proportional to 5,438.49, 8,158.32 and 1,739.40

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Solution

The fourth proportional to 5,438.49, 8,158.32 and 1,739.40 is: 2,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.49 : 8,158.32 = 1,739.40 : x
  2. Step 2: Convert to fraction form
    5,438.49/8,158.32 = 1,739.40/x
  3. Step 3: Cross multiply
    5,438.49x = 8,158.32 × 1,739.40
  4. Step 4: Simplify right side
    5,438.49x = 14,190,581.81
  5. Step 5: Solve for x
    x = 14,190,581.81/5,438.49
  6. Step 6: Final answer
    x = 2,609.29

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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.