Home / 5,509.81-7,603.48-3,119.72

Finding the Fourth Proportional to 5,509.81, 7,603.48 and 3,119.72

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Solution

The fourth proportional to 5,509.81, 7,603.48 and 3,119.72 is: 4,305.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.81 : 7,603.48 = 3,119.72 : x
  2. Step 2: Convert to fraction form
    5,509.81/7,603.48 = 3,119.72/x
  3. Step 3: Cross multiply
    5,509.81x = 7,603.48 × 3,119.72
  4. Step 4: Simplify right side
    5,509.81x = 23,720,717.42
  5. Step 5: Solve for x
    x = 23,720,717.42/5,509.81
  6. Step 6: Final answer
    x = 4,305.18

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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.