Home / 1,369.20-2,053.55-395.07

Finding the Fourth Proportional to 1,369.20, 2,053.55 and 395.07

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Solution

The fourth proportional to 1,369.20, 2,053.55 and 395.07 is: 592.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.20 : 2,053.55 = 395.07 : x
  2. Step 2: Convert to fraction form
    1,369.20/2,053.55 = 395.07/x
  3. Step 3: Cross multiply
    1,369.20x = 2,053.55 × 395.07
  4. Step 4: Simplify right side
    1,369.20x = 811,294.02
  5. Step 5: Solve for x
    x = 811,294.02/1,369.20
  6. Step 6: Final answer
    x = 592.53

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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.