Home / 1,106.72-1,527.93-983.70

Finding the Fourth Proportional to 1,106.72, 1,527.93 and 983.70

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Solution

The fourth proportional to 1,106.72, 1,527.93 and 983.70 is: 1,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.72 : 1,527.93 = 983.70 : x
  2. Step 2: Convert to fraction form
    1,106.72/1,527.93 = 983.70/x
  3. Step 3: Cross multiply
    1,106.72x = 1,527.93 × 983.70
  4. Step 4: Simplify right side
    1,106.72x = 1,503,024.74
  5. Step 5: Solve for x
    x = 1,503,024.74/1,106.72
  6. Step 6: Final answer
    x = 1,358.09

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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.