Home / 1,325.46-1,829.63-1,138.20

Finding the Fourth Proportional to 1,325.46, 1,829.63 and 1,138.20

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Solution

The fourth proportional to 1,325.46, 1,829.63 and 1,138.20 is: 1,571.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.46 : 1,829.63 = 1,138.20 : x
  2. Step 2: Convert to fraction form
    1,325.46/1,829.63 = 1,138.20/x
  3. Step 3: Cross multiply
    1,325.46x = 1,829.63 × 1,138.20
  4. Step 4: Simplify right side
    1,325.46x = 2,082,484.74
  5. Step 5: Solve for x
    x = 2,082,484.74/1,325.46
  6. Step 6: Final answer
    x = 1,571.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.