Home / 1,477.28-2,215.92-746.12

Finding the Fourth Proportional to 1,477.28, 2,215.92 and 746.12

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Solution

The fourth proportional to 1,477.28, 2,215.92 and 746.12 is: 1,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.28 : 2,215.92 = 746.12 : x
  2. Step 2: Convert to fraction form
    1,477.28/2,215.92 = 746.12/x
  3. Step 3: Cross multiply
    1,477.28x = 2,215.92 × 746.12
  4. Step 4: Simplify right side
    1,477.28x = 1,653,342.23
  5. Step 5: Solve for x
    x = 1,653,342.23/1,477.28
  6. Step 6: Final answer
    x = 1,119.18

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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.