Home / 6,420.74-8,860.34-4,031.95

Finding the Fourth Proportional to 6,420.74, 8,860.34 and 4,031.95

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Solution

The fourth proportional to 6,420.74, 8,860.34 and 4,031.95 is: 5,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.74 : 8,860.34 = 4,031.95 : x
  2. Step 2: Convert to fraction form
    6,420.74/8,860.34 = 4,031.95/x
  3. Step 3: Cross multiply
    6,420.74x = 8,860.34 × 4,031.95
  4. Step 4: Simplify right side
    6,420.74x = 35,724,383.40
  5. Step 5: Solve for x
    x = 35,724,383.40/6,420.74
  6. Step 6: Final answer
    x = 5,563.91

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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.