Home / 5,509.71-7,603.40-2,991.89

Finding the Fourth Proportional to 5,509.71, 7,603.40 and 2,991.89

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Solution

The fourth proportional to 5,509.71, 7,603.40 and 2,991.89 is: 4,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.71 : 7,603.40 = 2,991.89 : x
  2. Step 2: Convert to fraction form
    5,509.71/7,603.40 = 2,991.89/x
  3. Step 3: Cross multiply
    5,509.71x = 7,603.40 × 2,991.89
  4. Step 4: Simplify right side
    5,509.71x = 22,748,562.91
  5. Step 5: Solve for x
    x = 22,748,562.91/5,509.71
  6. Step 6: Final answer
    x = 4,128.81

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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.