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Finding the Fourth Proportional to 1,348.04, 1,860.20 and 817.04

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Solution

The fourth proportional to 1,348.04, 1,860.20 and 817.04 is: 1,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.04 : 1,860.20 = 817.04 : x
  2. Step 2: Convert to fraction form
    1,348.04/1,860.20 = 817.04/x
  3. Step 3: Cross multiply
    1,348.04x = 1,860.20 × 817.04
  4. Step 4: Simplify right side
    1,348.04x = 1,519,857.81
  5. Step 5: Solve for x
    x = 1,519,857.81/1,348.04
  6. Step 6: Final answer
    x = 1,127.46

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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.