Home / 8,631.56-11,904.70-5,603.36

Finding the Fourth Proportional to 8,631.56, 11,904.70 and 5,603.36

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Solution

The fourth proportional to 8,631.56, 11,904.70 and 5,603.36 is: 7,728.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.56 : 11,904.70 = 5,603.36 : x
  2. Step 2: Convert to fraction form
    8,631.56/11,904.70 = 5,603.36/x
  3. Step 3: Cross multiply
    8,631.56x = 11,904.70 × 5,603.36
  4. Step 4: Simplify right side
    8,631.56x = 66,706,319.79
  5. Step 5: Solve for x
    x = 66,706,319.79/8,631.56
  6. Step 6: Final answer
    x = 7,728.19

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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.