Home / 5,012.79-6,918.38-2,887.91

Finding the Fourth Proportional to 5,012.79, 6,918.38 and 2,887.91

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Solution

The fourth proportional to 5,012.79, 6,918.38 and 2,887.91 is: 3,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.79 : 6,918.38 = 2,887.91 : x
  2. Step 2: Convert to fraction form
    5,012.79/6,918.38 = 2,887.91/x
  3. Step 3: Cross multiply
    5,012.79x = 6,918.38 × 2,887.91
  4. Step 4: Simplify right side
    5,012.79x = 19,979,624.19
  5. Step 5: Solve for x
    x = 19,979,624.19/5,012.79
  6. Step 6: Final answer
    x = 3,985.73

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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.