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Finding the Fourth Proportional to 1,560.86, 2,154.01 and 852.70

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Solution

The fourth proportional to 1,560.86, 2,154.01 and 852.70 is: 1,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.86 : 2,154.01 = 852.70 : x
  2. Step 2: Convert to fraction form
    1,560.86/2,154.01 = 852.70/x
  3. Step 3: Cross multiply
    1,560.86x = 2,154.01 × 852.70
  4. Step 4: Simplify right side
    1,560.86x = 1,836,728.51
  5. Step 5: Solve for x
    x = 1,836,728.51/1,560.86
  6. Step 6: Final answer
    x = 1,176.74

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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.