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Finding the Fourth Proportional to 7,368.40, 11,053.20 and 2,103.40

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Solution

The fourth proportional to 7,368.40, 11,053.20 and 2,103.40 is: 3,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,368.40 : 11,053.20 = 2,103.40 : x
  2. Step 2: Convert to fraction form
    7,368.40/11,053.20 = 2,103.40/x
  3. Step 3: Cross multiply
    7,368.40x = 11,053.20 × 2,103.40
  4. Step 4: Simplify right side
    7,368.40x = 23,249,300.88
  5. Step 5: Solve for x
    x = 23,249,300.88/7,368.40
  6. Step 6: Final answer
    x = 3,155.27

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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.