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Finding the Fourth Proportional to 2,989.93, 4,484.90 and 1,429.57

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Solution

The fourth proportional to 2,989.93, 4,484.90 and 1,429.57 is: 2,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.93 : 4,484.90 = 1,429.57 : x
  2. Step 2: Convert to fraction form
    2,989.93/4,484.90 = 1,429.57/x
  3. Step 3: Cross multiply
    2,989.93x = 4,484.90 × 1,429.57
  4. Step 4: Simplify right side
    2,989.93x = 6,411,454.40
  5. Step 5: Solve for x
    x = 6,411,454.40/2,989.93
  6. Step 6: Final answer
    x = 2,144.35

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1.5x scale

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.