Home / 1,917.46-2,875.58-618.63

Finding the Fourth Proportional to 1,917.46, 2,875.58 and 618.63

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Solution

The fourth proportional to 1,917.46, 2,875.58 and 618.63 is: 927.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.46 : 2,875.58 = 618.63 : x
  2. Step 2: Convert to fraction form
    1,917.46/2,875.58 = 618.63/x
  3. Step 3: Cross multiply
    1,917.46x = 2,875.58 × 618.63
  4. Step 4: Simplify right side
    1,917.46x = 1,778,920.06
  5. Step 5: Solve for x
    x = 1,778,920.06/1,917.46
  6. Step 6: Final answer
    x = 927.75

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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.