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Finding the Fourth Proportional to 8,870.54, 13,307.22 and 2,947.64

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Solution

The fourth proportional to 8,870.54, 13,307.22 and 2,947.64 is: 4,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.54 : 13,307.22 = 2,947.64 : x
  2. Step 2: Convert to fraction form
    8,870.54/13,307.22 = 2,947.64/x
  3. Step 3: Cross multiply
    8,870.54x = 13,307.22 × 2,947.64
  4. Step 4: Simplify right side
    8,870.54x = 39,224,893.96
  5. Step 5: Solve for x
    x = 39,224,893.96/8,870.54
  6. Step 6: Final answer
    x = 4,421.93

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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.