Home / 3,785.49-5,678.77-1,319.95

Finding the Fourth Proportional to 3,785.49, 5,678.77 and 1,319.95

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Solution

The fourth proportional to 3,785.49, 5,678.77 and 1,319.95 is: 1,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.49 : 5,678.77 = 1,319.95 : x
  2. Step 2: Convert to fraction form
    3,785.49/5,678.77 = 1,319.95/x
  3. Step 3: Cross multiply
    3,785.49x = 5,678.77 × 1,319.95
  4. Step 4: Simplify right side
    3,785.49x = 7,495,692.46
  5. Step 5: Solve for x
    x = 7,495,692.46/3,785.49
  6. Step 6: Final answer
    x = 1,980.11

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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.