Home / 1,639.02-2,261.75-975.74

Finding the Fourth Proportional to 1,639.02, 2,261.75 and 975.74

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Solution

The fourth proportional to 1,639.02, 2,261.75 and 975.74 is: 1,346.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.02 : 2,261.75 = 975.74 : x
  2. Step 2: Convert to fraction form
    1,639.02/2,261.75 = 975.74/x
  3. Step 3: Cross multiply
    1,639.02x = 2,261.75 × 975.74
  4. Step 4: Simplify right side
    1,639.02x = 2,206,863.76
  5. Step 5: Solve for x
    x = 2,206,863.76/1,639.02
  6. Step 6: Final answer
    x = 1,346.45

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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.