Home / 7,740.10-11,615.13-2,809.30

Finding the Fourth Proportional to 7,740.10, 11,615.13 and 2,809.30

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Solution

The fourth proportional to 7,740.10, 11,615.13 and 2,809.30 is: 4,215.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.10 : 11,615.13 = 2,809.30 : x
  2. Step 2: Convert to fraction form
    7,740.10/11,615.13 = 2,809.30/x
  3. Step 3: Cross multiply
    7,740.10x = 11,615.13 × 2,809.30
  4. Step 4: Simplify right side
    7,740.10x = 32,630,384.71
  5. Step 5: Solve for x
    x = 32,630,384.71/7,740.10
  6. Step 6: Final answer
    x = 4,215.76

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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.