Home / 7,746.78-10,690.78-4,390.07

Finding the Fourth Proportional to 7,746.78, 10,690.78 and 4,390.07

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Solution

The fourth proportional to 7,746.78, 10,690.78 and 4,390.07 is: 6,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,746.78 : 10,690.78 = 4,390.07 : x
  2. Step 2: Convert to fraction form
    7,746.78/10,690.78 = 4,390.07/x
  3. Step 3: Cross multiply
    7,746.78x = 10,690.78 × 4,390.07
  4. Step 4: Simplify right side
    7,746.78x = 46,933,272.55
  5. Step 5: Solve for x
    x = 46,933,272.55/7,746.78
  6. Step 6: Final answer
    x = 6,058.42

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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.