Home / 1,678.77-2,316.33-1,015.61

Finding the Fourth Proportional to 1,678.77, 2,316.33 and 1,015.61

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Solution

The fourth proportional to 1,678.77, 2,316.33 and 1,015.61 is: 1,401.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.77 : 2,316.33 = 1,015.61 : x
  2. Step 2: Convert to fraction form
    1,678.77/2,316.33 = 1,015.61/x
  3. Step 3: Cross multiply
    1,678.77x = 2,316.33 × 1,015.61
  4. Step 4: Simplify right side
    1,678.77x = 2,352,487.91
  5. Step 5: Solve for x
    x = 2,352,487.91/1,678.77
  6. Step 6: Final answer
    x = 1,401.32

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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.