Home / 3,459.24-5,189.18-1,378.74

Finding the Fourth Proportional to 3,459.24, 5,189.18 and 1,378.74

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Solution

The fourth proportional to 3,459.24, 5,189.18 and 1,378.74 is: 2,068.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.24 : 5,189.18 = 1,378.74 : x
  2. Step 2: Convert to fraction form
    3,459.24/5,189.18 = 1,378.74/x
  3. Step 3: Cross multiply
    3,459.24x = 5,189.18 × 1,378.74
  4. Step 4: Simplify right side
    3,459.24x = 7,154,530.03
  5. Step 5: Solve for x
    x = 7,154,530.03/3,459.24
  6. Step 6: Final answer
    x = 2,068.24

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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.