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Finding the Fourth Proportional to 2,990.48, 4,477.32 and 1,526.48

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Solution

The fourth proportional to 2,990.48, 4,477.32 and 1,526.48 is: 2,285.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.48 : 4,477.32 = 1,526.48 : x
  2. Step 2: Convert to fraction form
    2,990.48/4,477.32 = 1,526.48/x
  3. Step 3: Cross multiply
    2,990.48x = 4,477.32 × 1,526.48
  4. Step 4: Simplify right side
    2,990.48x = 6,834,539.43
  5. Step 5: Solve for x
    x = 6,834,539.43/2,990.48
  6. Step 6: Final answer
    x = 2,285.43

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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.