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Finding the Fourth Proportional to 7,242.35, 10,798.65 and 7,111.13

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Solution

The fourth proportional to 7,242.35, 10,798.65 and 7,111.13 is: 10,603.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.35 : 10,798.65 = 7,111.13 : x
  2. Step 2: Convert to fraction form
    7,242.35/10,798.65 = 7,111.13/x
  3. Step 3: Cross multiply
    7,242.35x = 10,798.65 × 7,111.13
  4. Step 4: Simplify right side
    7,242.35x = 76,790,549.98
  5. Step 5: Solve for x
    x = 76,790,549.98/7,242.35
  6. Step 6: Final answer
    x = 10,603.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.