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Finding the Fourth Proportional to 1,506.77, 2,079.14 and 876.81

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Solution

The fourth proportional to 1,506.77, 2,079.14 and 876.81 is: 1,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.77 : 2,079.14 = 876.81 : x
  2. Step 2: Convert to fraction form
    1,506.77/2,079.14 = 876.81/x
  3. Step 3: Cross multiply
    1,506.77x = 2,079.14 × 876.81
  4. Step 4: Simplify right side
    1,506.77x = 1,823,011.23
  5. Step 5: Solve for x
    x = 1,823,011.23/1,506.77
  6. Step 6: Final answer
    x = 1,209.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.