Home / 1,913.58-2,870.70-615.36

Finding the Fourth Proportional to 1,913.58, 2,870.70 and 615.36

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Solution

The fourth proportional to 1,913.58, 2,870.70 and 615.36 is: 923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.58 : 2,870.70 = 615.36 : x
  2. Step 2: Convert to fraction form
    1,913.58/2,870.70 = 615.36/x
  3. Step 3: Cross multiply
    1,913.58x = 2,870.70 × 615.36
  4. Step 4: Simplify right side
    1,913.58x = 1,766,513.95
  5. Step 5: Solve for x
    x = 1,766,513.95/1,913.58
  6. Step 6: Final answer
    x = 923.15

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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.