Home / 7,810.63-10,778.88-4,668.64

Finding the Fourth Proportional to 7,810.63, 10,778.88 and 4,668.64

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Solution

The fourth proportional to 7,810.63, 10,778.88 and 4,668.64 is: 6,442.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.63 : 10,778.88 = 4,668.64 : x
  2. Step 2: Convert to fraction form
    7,810.63/10,778.88 = 4,668.64/x
  3. Step 3: Cross multiply
    7,810.63x = 10,778.88 × 4,668.64
  4. Step 4: Simplify right side
    7,810.63x = 50,322,710.32
  5. Step 5: Solve for x
    x = 50,322,710.32/7,810.63
  6. Step 6: Final answer
    x = 6,442.85

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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.