Home / 7,918.49-11,875.87-2,653.70

Finding the Fourth Proportional to 7,918.49, 11,875.87 and 2,653.70

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Solution

The fourth proportional to 7,918.49, 11,875.87 and 2,653.70 is: 3,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.49 : 11,875.87 = 2,653.70 : x
  2. Step 2: Convert to fraction form
    7,918.49/11,875.87 = 2,653.70/x
  3. Step 3: Cross multiply
    7,918.49x = 11,875.87 × 2,653.70
  4. Step 4: Simplify right side
    7,918.49x = 31,514,925.23
  5. Step 5: Solve for x
    x = 31,514,925.23/7,918.49
  6. Step 6: Final answer
    x = 3,979.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.