Home / 5,113.45-7,670.15-1,415.64

Finding the Fourth Proportional to 5,113.45, 7,670.15 and 1,415.64

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Solution

The fourth proportional to 5,113.45, 7,670.15 and 1,415.64 is: 2,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.45 : 7,670.15 = 1,415.64 : x
  2. Step 2: Convert to fraction form
    5,113.45/7,670.15 = 1,415.64/x
  3. Step 3: Cross multiply
    5,113.45x = 7,670.15 × 1,415.64
  4. Step 4: Simplify right side
    5,113.45x = 10,858,171.15
  5. Step 5: Solve for x
    x = 10,858,171.15/5,113.45
  6. Step 6: Final answer
    x = 2,123.45

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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.