Home / 1,610.41-2,219.81-1,312.88

Finding the Fourth Proportional to 1,610.41, 2,219.81 and 1,312.88

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Solution

The fourth proportional to 1,610.41, 2,219.81 and 1,312.88 is: 1,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.41 : 2,219.81 = 1,312.88 : x
  2. Step 2: Convert to fraction form
    1,610.41/2,219.81 = 1,312.88/x
  3. Step 3: Cross multiply
    1,610.41x = 2,219.81 × 1,312.88
  4. Step 4: Simplify right side
    1,610.41x = 2,914,345.22
  5. Step 5: Solve for x
    x = 2,914,345.22/1,610.41
  6. Step 6: Final answer
    x = 1,809.70

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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.