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Finding the Fourth Proportional to 1,477.41, 2,038.79 and 814.25

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Solution

The fourth proportional to 1,477.41, 2,038.79 and 814.25 is: 1,123.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.41 : 2,038.79 = 814.25 : x
  2. Step 2: Convert to fraction form
    1,477.41/2,038.79 = 814.25/x
  3. Step 3: Cross multiply
    1,477.41x = 2,038.79 × 814.25
  4. Step 4: Simplify right side
    1,477.41x = 1,660,084.76
  5. Step 5: Solve for x
    x = 1,660,084.76/1,477.41
  6. Step 6: Final answer
    x = 1,123.65

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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.