Home / 1,914.40-2,870.99-615.56

Finding the Fourth Proportional to 1,914.40, 2,870.99 and 615.56

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Solution

The fourth proportional to 1,914.40, 2,870.99 and 615.56 is: 923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.40 : 2,870.99 = 615.56 : x
  2. Step 2: Convert to fraction form
    1,914.40/2,870.99 = 615.56/x
  3. Step 3: Cross multiply
    1,914.40x = 2,870.99 × 615.56
  4. Step 4: Simplify right side
    1,914.40x = 1,767,270.70
  5. Step 5: Solve for x
    x = 1,767,270.70/1,914.40
  6. Step 6: Final answer
    x = 923.15

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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.