Home / 7,836,128.76-11,748,827.07-3,990,507.15

Finding the Fourth Proportional to 7,836,128.76, 11,748,827.07 and 3,990,507.15

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Solution

The fourth proportional to 7,836,128.76, 11,748,827.07 and 3,990,507.15 is: 5,983,028.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836,128.76 : 11,748,827.07 = 3,990,507.15 : x
  2. Step 2: Convert to fraction form
    7,836,128.76/11,748,827.07 = 3,990,507.15/x
  3. Step 3: Cross multiply
    7,836,128.76x = 11,748,827.07 × 3,990,507.15
  4. Step 4: Simplify right side
    7,836,128.76x = 46,883,778,426,948.55
  5. Step 5: Solve for x
    x = 46,883,778,426,948.55/7,836,128.76
  6. Step 6: Final answer
    x = 5,983,028.08

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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.