Home / 1,423.23-2,135.02-486.33

Finding the Fourth Proportional to 1,423.23, 2,135.02 and 486.33

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Solution

The fourth proportional to 1,423.23, 2,135.02 and 486.33 is: 729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.23 : 2,135.02 = 486.33 : x
  2. Step 2: Convert to fraction form
    1,423.23/2,135.02 = 486.33/x
  3. Step 3: Cross multiply
    1,423.23x = 2,135.02 × 486.33
  4. Step 4: Simplify right side
    1,423.23x = 1,038,324.28
  5. Step 5: Solve for x
    x = 1,038,324.28/1,423.23
  6. Step 6: Final answer
    x = 729.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.