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Finding the Fourth Proportional to 7,803.01, 11,700.91 and 3,119.07

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Solution

The fourth proportional to 7,803.01, 11,700.91 and 3,119.07 is: 4,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.01 : 11,700.91 = 3,119.07 : x
  2. Step 2: Convert to fraction form
    7,803.01/11,700.91 = 3,119.07/x
  3. Step 3: Cross multiply
    7,803.01x = 11,700.91 × 3,119.07
  4. Step 4: Simplify right side
    7,803.01x = 36,495,888.86
  5. Step 5: Solve for x
    x = 36,495,888.86/7,803.01
  6. Step 6: Final answer
    x = 4,677.16

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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.