Home / 2,245.64-3,368.93-947.11

Finding the Fourth Proportional to 2,245.64, 3,368.93 and 947.11

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Solution

The fourth proportional to 2,245.64, 3,368.93 and 947.11 is: 1,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.64 : 3,368.93 = 947.11 : x
  2. Step 2: Convert to fraction form
    2,245.64/3,368.93 = 947.11/x
  3. Step 3: Cross multiply
    2,245.64x = 3,368.93 × 947.11
  4. Step 4: Simplify right side
    2,245.64x = 3,190,740.45
  5. Step 5: Solve for x
    x = 3,190,740.45/2,245.64
  6. Step 6: Final answer
    x = 1,420.86

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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.