Home / 9,619.84-13,275.75-5,428

Finding the Fourth Proportional to 9,619.84, 13,275.75 and 5,428

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Solution

The fourth proportional to 9,619.84, 13,275.75 and 5,428 is: 7,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,619.84 : 13,275.75 = 5,428 : x
  2. Step 2: Convert to fraction form
    9,619.84/13,275.75 = 5,428/x
  3. Step 3: Cross multiply
    9,619.84x = 13,275.75 × 5,428
  4. Step 4: Simplify right side
    9,619.84x = 72,060,771
  5. Step 5: Solve for x
    x = 72,060,771/9,619.84
  6. Step 6: Final answer
    x = 7,490.85

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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.