Home / 4,208.76-6,312.90-1,287.06

Finding the Fourth Proportional to 4,208.76, 6,312.90 and 1,287.06

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Solution

The fourth proportional to 4,208.76, 6,312.90 and 1,287.06 is: 1,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,208.76 : 6,312.90 = 1,287.06 : x
  2. Step 2: Convert to fraction form
    4,208.76/6,312.90 = 1,287.06/x
  3. Step 3: Cross multiply
    4,208.76x = 6,312.90 × 1,287.06
  4. Step 4: Simplify right side
    4,208.76x = 8,125,062.23
  5. Step 5: Solve for x
    x = 8,125,062.23/4,208.76
  6. Step 6: Final answer
    x = 1,930.51

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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.