Home / 7,339.84-10,128.64-4,153.28

Finding the Fourth Proportional to 7,339.84, 10,128.64 and 4,153.28

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Solution

The fourth proportional to 7,339.84, 10,128.64 and 4,153.28 is: 5,731.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,339.84 : 10,128.64 = 4,153.28 : x
  2. Step 2: Convert to fraction form
    7,339.84/10,128.64 = 4,153.28/x
  3. Step 3: Cross multiply
    7,339.84x = 10,128.64 × 4,153.28
  4. Step 4: Simplify right side
    7,339.84x = 42,067,077.94
  5. Step 5: Solve for x
    x = 42,067,077.94/7,339.84
  6. Step 6: Final answer
    x = 5,731.33

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Half scale
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Double scale
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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.