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Finding the Fourth Proportional to 1,477.42, 2,038.68 and 814.23

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Solution

The fourth proportional to 1,477.42, 2,038.68 and 814.23 is: 1,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.42 : 2,038.68 = 814.23 : x
  2. Step 2: Convert to fraction form
    1,477.42/2,038.68 = 814.23/x
  3. Step 3: Cross multiply
    1,477.42x = 2,038.68 × 814.23
  4. Step 4: Simplify right side
    1,477.42x = 1,659,954.42
  5. Step 5: Solve for x
    x = 1,659,954.42/1,477.42
  6. Step 6: Final answer
    x = 1,123.55

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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.