Home / 9,821.56-13,552.86-5,787.76

Finding the Fourth Proportional to 9,821.56, 13,552.86 and 5,787.76

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Solution

The fourth proportional to 9,821.56, 13,552.86 and 5,787.76 is: 7,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,821.56 : 13,552.86 = 5,787.76 : x
  2. Step 2: Convert to fraction form
    9,821.56/13,552.86 = 5,787.76/x
  3. Step 3: Cross multiply
    9,821.56x = 13,552.86 × 5,787.76
  4. Step 4: Simplify right side
    9,821.56x = 78,440,700.99
  5. Step 5: Solve for x
    x = 78,440,700.99/9,821.56
  6. Step 6: Final answer
    x = 7,986.58

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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.