Home / 1,423.17-1,964.75-983.44

Finding the Fourth Proportional to 1,423.17, 1,964.75 and 983.44

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Solution

The fourth proportional to 1,423.17, 1,964.75 and 983.44 is: 1,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.17 : 1,964.75 = 983.44 : x
  2. Step 2: Convert to fraction form
    1,423.17/1,964.75 = 983.44/x
  3. Step 3: Cross multiply
    1,423.17x = 1,964.75 × 983.44
  4. Step 4: Simplify right side
    1,423.17x = 1,932,213.74
  5. Step 5: Solve for x
    x = 1,932,213.74/1,423.17
  6. Step 6: Final answer
    x = 1,357.68

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1.5x scale

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.