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Finding the Fourth Proportional to 7,156.88, 9,877.10 and 4,013.67

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Solution

The fourth proportional to 7,156.88, 9,877.10 and 4,013.67 is: 5,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.88 : 9,877.10 = 4,013.67 : x
  2. Step 2: Convert to fraction form
    7,156.88/9,877.10 = 4,013.67/x
  3. Step 3: Cross multiply
    7,156.88x = 9,877.10 × 4,013.67
  4. Step 4: Simplify right side
    7,156.88x = 39,643,419.96
  5. Step 5: Solve for x
    x = 39,643,419.96/7,156.88
  6. Step 6: Final answer
    x = 5,539.20

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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.