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Finding the Fourth Proportional to 5,415.63, 7,473.57 and 2,931.63

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Solution

The fourth proportional to 5,415.63, 7,473.57 and 2,931.63 is: 4,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.63 : 7,473.57 = 2,931.63 : x
  2. Step 2: Convert to fraction form
    5,415.63/7,473.57 = 2,931.63/x
  3. Step 3: Cross multiply
    5,415.63x = 7,473.57 × 2,931.63
  4. Step 4: Simplify right side
    5,415.63x = 21,909,742.02
  5. Step 5: Solve for x
    x = 21,909,742.02/5,415.63
  6. Step 6: Final answer
    x = 4,045.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.