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Finding the Fourth Proportional to 2,870.81, 4,305.81 and 922.76

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Solution

The fourth proportional to 2,870.81, 4,305.81 and 922.76 is: 1,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.81 : 4,305.81 = 922.76 : x
  2. Step 2: Convert to fraction form
    2,870.81/4,305.81 = 922.76/x
  3. Step 3: Cross multiply
    2,870.81x = 4,305.81 × 922.76
  4. Step 4: Simplify right side
    2,870.81x = 3,973,229.24
  5. Step 5: Solve for x
    x = 3,973,229.24/2,870.81
  6. Step 6: Final answer
    x = 1,384.01

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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.