Home / 1,560.89-2,152.09-1,311.66

Finding the Fourth Proportional to 1,560.89, 2,152.09 and 1,311.66

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Solution

The fourth proportional to 1,560.89, 2,152.09 and 1,311.66 is: 1,808.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.89 : 2,152.09 = 1,311.66 : x
  2. Step 2: Convert to fraction form
    1,560.89/2,152.09 = 1,311.66/x
  3. Step 3: Cross multiply
    1,560.89x = 2,152.09 × 1,311.66
  4. Step 4: Simplify right side
    1,560.89x = 2,822,810.37
  5. Step 5: Solve for x
    x = 2,822,810.37/1,560.89
  6. Step 6: Final answer
    x = 1,808.46

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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.