Home / 4,280.34-6,420.42-1,971.84

Finding the Fourth Proportional to 4,280.34, 6,420.42 and 1,971.84

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Solution

The fourth proportional to 4,280.34, 6,420.42 and 1,971.84 is: 2,957.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.34 : 6,420.42 = 1,971.84 : x
  2. Step 2: Convert to fraction form
    4,280.34/6,420.42 = 1,971.84/x
  3. Step 3: Cross multiply
    4,280.34x = 6,420.42 × 1,971.84
  4. Step 4: Simplify right side
    4,280.34x = 12,660,031.11
  5. Step 5: Solve for x
    x = 12,660,031.11/4,280.34
  6. Step 6: Final answer
    x = 2,957.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.