Home / 1,388.07-2,066.63-1,368.68

Finding the Fourth Proportional to 1,388.07, 2,066.63 and 1,368.68

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Solution

The fourth proportional to 1,388.07, 2,066.63 and 1,368.68 is: 2,037.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.07 : 2,066.63 = 1,368.68 : x
  2. Step 2: Convert to fraction form
    1,388.07/2,066.63 = 1,368.68/x
  3. Step 3: Cross multiply
    1,388.07x = 2,066.63 × 1,368.68
  4. Step 4: Simplify right side
    1,388.07x = 2,828,553.47
  5. Step 5: Solve for x
    x = 2,828,553.47/1,388.07
  6. Step 6: Final answer
    x = 2,037.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.