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Finding the Fourth Proportional to 8,898.40, 13,347.60 and 7,746.40

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Solution

The fourth proportional to 8,898.40, 13,347.60 and 7,746.40 is: 11,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.40 : 13,347.60 = 7,746.40 : x
  2. Step 2: Convert to fraction form
    8,898.40/13,347.60 = 7,746.40/x
  3. Step 3: Cross multiply
    8,898.40x = 13,347.60 × 7,746.40
  4. Step 4: Simplify right side
    8,898.40x = 103,395,848.64
  5. Step 5: Solve for x
    x = 103,395,848.64/8,898.40
  6. Step 6: Final answer
    x = 11,619.60

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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.