Home / 3,678.51-5,077.98-2,186.91

Finding the Fourth Proportional to 3,678.51, 5,077.98 and 2,186.91

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Solution

The fourth proportional to 3,678.51, 5,077.98 and 2,186.91 is: 3,018.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.51 : 5,077.98 = 2,186.91 : x
  2. Step 2: Convert to fraction form
    3,678.51/5,077.98 = 2,186.91/x
  3. Step 3: Cross multiply
    3,678.51x = 5,077.98 × 2,186.91
  4. Step 4: Simplify right side
    3,678.51x = 11,105,085.24
  5. Step 5: Solve for x
    x = 11,105,085.24/3,678.51
  6. Step 6: Final answer
    x = 3,018.91

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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.