Home / 4,688.20-7,031.40-1,401.40

Finding the Fourth Proportional to 4,688.20, 7,031.40 and 1,401.40

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Solution

The fourth proportional to 4,688.20, 7,031.40 and 1,401.40 is: 2,101.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,688.20 : 7,031.40 = 1,401.40 : x
  2. Step 2: Convert to fraction form
    4,688.20/7,031.40 = 1,401.40/x
  3. Step 3: Cross multiply
    4,688.20x = 7,031.40 × 1,401.40
  4. Step 4: Simplify right side
    4,688.20x = 9,853,803.96
  5. Step 5: Solve for x
    x = 9,853,803.96/4,688.20
  6. Step 6: Final answer
    x = 2,101.83

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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.