Home / 1,455.05-2,006.78-1,056.74

Finding the Fourth Proportional to 1,455.05, 2,006.78 and 1,056.74

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Solution

The fourth proportional to 1,455.05, 2,006.78 and 1,056.74 is: 1,457.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.05 : 2,006.78 = 1,056.74 : x
  2. Step 2: Convert to fraction form
    1,455.05/2,006.78 = 1,056.74/x
  3. Step 3: Cross multiply
    1,455.05x = 2,006.78 × 1,056.74
  4. Step 4: Simplify right side
    1,455.05x = 2,120,629.38
  5. Step 5: Solve for x
    x = 2,120,629.38/1,455.05
  6. Step 6: Final answer
    x = 1,457.43

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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.