Home / 6,400.10-8,828.75-4,407.20

Finding the Fourth Proportional to 6,400.10, 8,828.75 and 4,407.20

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Solution

The fourth proportional to 6,400.10, 8,828.75 and 4,407.20 is: 6,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400.10 : 8,828.75 = 4,407.20 : x
  2. Step 2: Convert to fraction form
    6,400.10/8,828.75 = 4,407.20/x
  3. Step 3: Cross multiply
    6,400.10x = 8,828.75 × 4,407.20
  4. Step 4: Simplify right side
    6,400.10x = 38,910,000.82
  5. Step 5: Solve for x
    x = 38,910,000.82/6,400.10
  6. Step 6: Final answer
    x = 6,079.60

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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.