Home / 5,189.57-7,785.72-1,492.05

Finding the Fourth Proportional to 5,189.57, 7,785.72 and 1,492.05

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Solution

The fourth proportional to 5,189.57, 7,785.72 and 1,492.05 is: 2,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.57 : 7,785.72 = 1,492.05 : x
  2. Step 2: Convert to fraction form
    5,189.57/7,785.72 = 1,492.05/x
  3. Step 3: Cross multiply
    5,189.57x = 7,785.72 × 1,492.05
  4. Step 4: Simplify right side
    5,189.57x = 11,616,683.53
  5. Step 5: Solve for x
    x = 11,616,683.53/5,189.57
  6. Step 6: Final answer
    x = 2,238.47

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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.