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Finding the Fourth Proportional to 1,510.70, 2,084.14 and 880.91

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Solution

The fourth proportional to 1,510.70, 2,084.14 and 880.91 is: 1,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.70 : 2,084.14 = 880.91 : x
  2. Step 2: Convert to fraction form
    1,510.70/2,084.14 = 880.91/x
  3. Step 3: Cross multiply
    1,510.70x = 2,084.14 × 880.91
  4. Step 4: Simplify right side
    1,510.70x = 1,835,948.29
  5. Step 5: Solve for x
    x = 1,835,948.29/1,510.70
  6. Step 6: Final answer
    x = 1,215.30

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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.