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Finding the Fourth Proportional to 2,898.90, 4,329.95 and 2,489.58

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Solution

The fourth proportional to 2,898.90, 4,329.95 and 2,489.58 is: 3,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.90 : 4,329.95 = 2,489.58 : x
  2. Step 2: Convert to fraction form
    2,898.90/4,329.95 = 2,489.58/x
  3. Step 3: Cross multiply
    2,898.90x = 4,329.95 × 2,489.58
  4. Step 4: Simplify right side
    2,898.90x = 10,779,744.47
  5. Step 5: Solve for x
    x = 10,779,744.47/2,898.90
  6. Step 6: Final answer
    x = 3,718.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.