Home / 1,917.30-2,875.33-618.47

Finding the Fourth Proportional to 1,917.30, 2,875.33 and 618.47

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Solution

The fourth proportional to 1,917.30, 2,875.33 and 618.47 is: 927.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.30 : 2,875.33 = 618.47 : x
  2. Step 2: Convert to fraction form
    1,917.30/2,875.33 = 618.47/x
  3. Step 3: Cross multiply
    1,917.30x = 2,875.33 × 618.47
  4. Step 4: Simplify right side
    1,917.30x = 1,778,302.52
  5. Step 5: Solve for x
    x = 1,778,302.52/1,917.30
  6. Step 6: Final answer
    x = 927.50

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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.