Home / 7,166,421-9,889,661.10-3,947,157

Finding the Fourth Proportional to 7,166,421, 9,889,661.10 and 3,947,157

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Solution

The fourth proportional to 7,166,421, 9,889,661.10 and 3,947,157 is: 5,447,076.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166,421 : 9,889,661.10 = 3,947,157 : x
  2. Step 2: Convert to fraction form
    7,166,421/9,889,661.10 = 3,947,157/x
  3. Step 3: Cross multiply
    7,166,421x = 9,889,661.10 × 3,947,157
  4. Step 4: Simplify right side
    7,166,421x = 39,036,045,038,492.70
  5. Step 5: Solve for x
    x = 39,036,045,038,492.70/7,166,421
  6. Step 6: Final answer
    x = 5,447,076.73

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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.