Home / 7,782.25-10,739.51-4,987.75

Finding the Fourth Proportional to 7,782.25, 10,739.51 and 4,987.75

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Solution

The fourth proportional to 7,782.25, 10,739.51 and 4,987.75 is: 6,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.25 : 10,739.51 = 4,987.75 : x
  2. Step 2: Convert to fraction form
    7,782.25/10,739.51 = 4,987.75/x
  3. Step 3: Cross multiply
    7,782.25x = 10,739.51 × 4,987.75
  4. Step 4: Simplify right side
    7,782.25x = 53,565,966.06
  5. Step 5: Solve for x
    x = 53,565,966.06/7,782.25
  6. Step 6: Final answer
    x = 6,883.10

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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.