Home / 1,087.47-1,622.60-983.79

Finding the Fourth Proportional to 1,087.47, 1,622.60 and 983.79

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Solution

The fourth proportional to 1,087.47, 1,622.60 and 983.79 is: 1,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.47 : 1,622.60 = 983.79 : x
  2. Step 2: Convert to fraction form
    1,087.47/1,622.60 = 983.79/x
  3. Step 3: Cross multiply
    1,087.47x = 1,622.60 × 983.79
  4. Step 4: Simplify right side
    1,087.47x = 1,596,292.74
  5. Step 5: Solve for x
    x = 1,596,292.74/1,087.47
  6. Step 6: Final answer
    x = 1,467.90

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1.5x scale

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.