Home / 3,715.86-5,118.59-2,830.13

Finding the Fourth Proportional to 3,715.86, 5,118.59 and 2,830.13

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Solution

The fourth proportional to 3,715.86, 5,118.59 and 2,830.13 is: 3,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.86 : 5,118.59 = 2,830.13 : x
  2. Step 2: Convert to fraction form
    3,715.86/5,118.59 = 2,830.13/x
  3. Step 3: Cross multiply
    3,715.86x = 5,118.59 × 2,830.13
  4. Step 4: Simplify right side
    3,715.86x = 14,486,235.37
  5. Step 5: Solve for x
    x = 14,486,235.37/3,715.86
  6. Step 6: Final answer
    x = 3,898.49

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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.