Home / 3,909.26-5,864.72-1,312.13

Finding the Fourth Proportional to 3,909.26, 5,864.72 and 1,312.13

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Solution

The fourth proportional to 3,909.26, 5,864.72 and 1,312.13 is: 1,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.26 : 5,864.72 = 1,312.13 : x
  2. Step 2: Convert to fraction form
    3,909.26/5,864.72 = 1,312.13/x
  3. Step 3: Cross multiply
    3,909.26x = 5,864.72 × 1,312.13
  4. Step 4: Simplify right side
    3,909.26x = 7,695,239.17
  5. Step 5: Solve for x
    x = 7,695,239.17/3,909.26
  6. Step 6: Final answer
    x = 1,968.47

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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.