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Finding the Fourth Proportional to 10,365.87, 15,551.49 and 2,970.87

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Solution

The fourth proportional to 10,365.87, 15,551.49 and 2,970.87 is: 4,457.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,365.87 : 15,551.49 = 2,970.87 : x
  2. Step 2: Convert to fraction form
    10,365.87/15,551.49 = 2,970.87/x
  3. Step 3: Cross multiply
    10,365.87x = 15,551.49 × 2,970.87
  4. Step 4: Simplify right side
    10,365.87x = 46,201,455.10
  5. Step 5: Solve for x
    x = 46,201,455.10/10,365.87
  6. Step 6: Final answer
    x = 4,457.07

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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.