Home / 7,811.36-10,778.40-4,454.25

Finding the Fourth Proportional to 7,811.36, 10,778.40 and 4,454.25

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Solution

The fourth proportional to 7,811.36, 10,778.40 and 4,454.25 is: 6,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.36 : 10,778.40 = 4,454.25 : x
  2. Step 2: Convert to fraction form
    7,811.36/10,778.40 = 4,454.25/x
  3. Step 3: Cross multiply
    7,811.36x = 10,778.40 × 4,454.25
  4. Step 4: Simplify right side
    7,811.36x = 48,009,688.20
  5. Step 5: Solve for x
    x = 48,009,688.20/7,811.36
  6. Step 6: Final answer
    x = 6,146.14

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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.