Home / 6,421.16-8,858.58-3,903.32

Finding the Fourth Proportional to 6,421.16, 8,858.58 and 3,903.32

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Solution

The fourth proportional to 6,421.16, 8,858.58 and 3,903.32 is: 5,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.16 : 8,858.58 = 3,903.32 : x
  2. Step 2: Convert to fraction form
    6,421.16/8,858.58 = 3,903.32/x
  3. Step 3: Cross multiply
    6,421.16x = 8,858.58 × 3,903.32
  4. Step 4: Simplify right side
    6,421.16x = 34,577,872.49
  5. Step 5: Solve for x
    x = 34,577,872.49/6,421.16
  6. Step 6: Final answer
    x = 5,384.99

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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.