Home / 2,865,803.79-3,955,088.34-2,139,390.12

Finding the Fourth Proportional to 2,865,803.79, 3,955,088.34 and 2,139,390.12

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Solution

The fourth proportional to 2,865,803.79, 3,955,088.34 and 2,139,390.12 is: 2,952,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865,803.79 : 3,955,088.34 = 2,139,390.12 : x
  2. Step 2: Convert to fraction form
    2,865,803.79/3,955,088.34 = 2,139,390.12/x
  3. Step 3: Cross multiply
    2,865,803.79x = 3,955,088.34 × 2,139,390.12
  4. Step 4: Simplify right side
    2,865,803.79x = 8,461,476,918,323.20
  5. Step 5: Solve for x
    x = 8,461,476,918,323.20/2,865,803.79
  6. Step 6: Final answer
    x = 2,952,566.73

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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.