Home / 6,421.32-8,858.76-3,903.02

Finding the Fourth Proportional to 6,421.32, 8,858.76 and 3,903.02

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Solution

The fourth proportional to 6,421.32, 8,858.76 and 3,903.02 is: 5,384.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.32 : 8,858.76 = 3,903.02 : x
  2. Step 2: Convert to fraction form
    6,421.32/8,858.76 = 3,903.02/x
  3. Step 3: Cross multiply
    6,421.32x = 8,858.76 × 3,903.02
  4. Step 4: Simplify right side
    6,421.32x = 34,575,917.46
  5. Step 5: Solve for x
    x = 34,575,917.46/6,421.32
  6. Step 6: Final answer
    x = 5,384.55

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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.