Home / 9,856.40-13,603.20-5,664.56

Finding the Fourth Proportional to 9,856.40, 13,603.20 and 5,664.56

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Solution

The fourth proportional to 9,856.40, 13,603.20 and 5,664.56 is: 7,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,856.40 : 13,603.20 = 5,664.56 : x
  2. Step 2: Convert to fraction form
    9,856.40/13,603.20 = 5,664.56/x
  3. Step 3: Cross multiply
    9,856.40x = 13,603.20 × 5,664.56
  4. Step 4: Simplify right side
    9,856.40x = 77,056,142.59
  5. Step 5: Solve for x
    x = 77,056,142.59/9,856.40
  6. Step 6: Final answer
    x = 7,817.88

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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.