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Finding the Fourth Proportional to 2,668.94, 3,683.13 and 1,490.29

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Solution

The fourth proportional to 2,668.94, 3,683.13 and 1,490.29 is: 2,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.94 : 3,683.13 = 1,490.29 : x
  2. Step 2: Convert to fraction form
    2,668.94/3,683.13 = 1,490.29/x
  3. Step 3: Cross multiply
    2,668.94x = 3,683.13 × 1,490.29
  4. Step 4: Simplify right side
    2,668.94x = 5,488,931.81
  5. Step 5: Solve for x
    x = 5,488,931.81/2,668.94
  6. Step 6: Final answer
    x = 2,056.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.