Home / 1,845.40-2,767.14-612.68

Finding the Fourth Proportional to 1,845.40, 2,767.14 and 612.68

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Solution

The fourth proportional to 1,845.40, 2,767.14 and 612.68 is: 918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.40 : 2,767.14 = 612.68 : x
  2. Step 2: Convert to fraction form
    1,845.40/2,767.14 = 612.68/x
  3. Step 3: Cross multiply
    1,845.40x = 2,767.14 × 612.68
  4. Step 4: Simplify right side
    1,845.40x = 1,695,371.34
  5. Step 5: Solve for x
    x = 1,695,371.34/1,845.40
  6. Step 6: Final answer
    x = 918.70

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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.