Home / 2,887,128.77-3,980,130.35-1,968,178.64

Finding the Fourth Proportional to 2,887,128.77, 3,980,130.35 and 1,968,178.64

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Solution

The fourth proportional to 2,887,128.77, 3,980,130.35 and 1,968,178.64 is: 2,713,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887,128.77 : 3,980,130.35 = 1,968,178.64 : x
  2. Step 2: Convert to fraction form
    2,887,128.77/3,980,130.35 = 1,968,178.64/x
  3. Step 3: Cross multiply
    2,887,128.77x = 3,980,130.35 × 1,968,178.64
  4. Step 4: Simplify right side
    2,887,128.77x = 7,833,607,509,544.18
  5. Step 5: Solve for x
    x = 7,833,607,509,544.18/2,887,128.77
  6. Step 6: Final answer
    x = 2,713,286.50

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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.