Home / 3,111.51-4,666.30-1,031.05

Finding the Fourth Proportional to 3,111.51, 4,666.30 and 1,031.05

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Solution

The fourth proportional to 3,111.51, 4,666.30 and 1,031.05 is: 1,546.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.51 : 4,666.30 = 1,031.05 : x
  2. Step 2: Convert to fraction form
    3,111.51/4,666.30 = 1,031.05/x
  3. Step 3: Cross multiply
    3,111.51x = 4,666.30 × 1,031.05
  4. Step 4: Simplify right side
    3,111.51x = 4,811,160.13
  5. Step 5: Solve for x
    x = 4,811,160.13/3,111.51
  6. Step 6: Final answer
    x = 1,546.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.