Home / 1,434.07-1,977.51-1,061.78

Finding the Fourth Proportional to 1,434.07, 1,977.51 and 1,061.78

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Solution

The fourth proportional to 1,434.07, 1,977.51 and 1,061.78 is: 1,464.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.07 : 1,977.51 = 1,061.78 : x
  2. Step 2: Convert to fraction form
    1,434.07/1,977.51 = 1,061.78/x
  3. Step 3: Cross multiply
    1,434.07x = 1,977.51 × 1,061.78
  4. Step 4: Simplify right side
    1,434.07x = 2,099,674.66
  5. Step 5: Solve for x
    x = 2,099,674.66/1,434.07
  6. Step 6: Final answer
    x = 1,464.14

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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.