Home / 1,610.48-2,217.96-1,389.32

Finding the Fourth Proportional to 1,610.48, 2,217.96 and 1,389.32

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Solution

The fourth proportional to 1,610.48, 2,217.96 and 1,389.32 is: 1,913.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.48 : 2,217.96 = 1,389.32 : x
  2. Step 2: Convert to fraction form
    1,610.48/2,217.96 = 1,389.32/x
  3. Step 3: Cross multiply
    1,610.48x = 2,217.96 × 1,389.32
  4. Step 4: Simplify right side
    1,610.48x = 3,081,456.19
  5. Step 5: Solve for x
    x = 3,081,456.19/1,610.48
  6. Step 6: Final answer
    x = 1,913.38

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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.