Home / 9,619.64-13,274.88-5,428

Finding the Fourth Proportional to 9,619.64, 13,274.88 and 5,428

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Solution

The fourth proportional to 9,619.64, 13,274.88 and 5,428 is: 7,490.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,619.64 : 13,274.88 = 5,428 : x
  2. Step 2: Convert to fraction form
    9,619.64/13,274.88 = 5,428/x
  3. Step 3: Cross multiply
    9,619.64x = 13,274.88 × 5,428
  4. Step 4: Simplify right side
    9,619.64x = 72,056,048.64
  5. Step 5: Solve for x
    x = 72,056,048.64/9,619.64
  6. Step 6: Final answer
    x = 7,490.51

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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.