Home / 4,878.38-7,317.77-1,415.63

Finding the Fourth Proportional to 4,878.38, 7,317.77 and 1,415.63

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Solution

The fourth proportional to 4,878.38, 7,317.77 and 1,415.63 is: 2,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.38 : 7,317.77 = 1,415.63 : x
  2. Step 2: Convert to fraction form
    4,878.38/7,317.77 = 1,415.63/x
  3. Step 3: Cross multiply
    4,878.38x = 7,317.77 × 1,415.63
  4. Step 4: Simplify right side
    4,878.38x = 10,359,211.08
  5. Step 5: Solve for x
    x = 10,359,211.08/4,878.38
  6. Step 6: Final answer
    x = 2,123.50

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1.5x scale

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.