Home / 7,127.87-10,686.03-2,970.99

Finding the Fourth Proportional to 7,127.87, 10,686.03 and 2,970.99

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Solution

The fourth proportional to 7,127.87, 10,686.03 and 2,970.99 is: 4,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.87 : 10,686.03 = 2,970.99 : x
  2. Step 2: Convert to fraction form
    7,127.87/10,686.03 = 2,970.99/x
  3. Step 3: Cross multiply
    7,127.87x = 10,686.03 × 2,970.99
  4. Step 4: Simplify right side
    7,127.87x = 31,748,088.27
  5. Step 5: Solve for x
    x = 31,748,088.27/7,127.87
  6. Step 6: Final answer
    x = 4,454.08

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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.