Home / 7,746.20-10,689.60-4,209.50

Finding the Fourth Proportional to 7,746.20, 10,689.60 and 4,209.50

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Solution

The fourth proportional to 7,746.20, 10,689.60 and 4,209.50 is: 5,809.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,746.20 : 10,689.60 = 4,209.50 : x
  2. Step 2: Convert to fraction form
    7,746.20/10,689.60 = 4,209.50/x
  3. Step 3: Cross multiply
    7,746.20x = 10,689.60 × 4,209.50
  4. Step 4: Simplify right side
    7,746.20x = 44,997,871.20
  5. Step 5: Solve for x
    x = 44,997,871.20/7,746.20
  6. Step 6: Final answer
    x = 5,809.03

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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.