Home / 1,894.81-2,615.53-1,187.45

Finding the Fourth Proportional to 1,894.81, 2,615.53 and 1,187.45

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Solution

The fourth proportional to 1,894.81, 2,615.53 and 1,187.45 is: 1,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.81 : 2,615.53 = 1,187.45 : x
  2. Step 2: Convert to fraction form
    1,894.81/2,615.53 = 1,187.45/x
  3. Step 3: Cross multiply
    1,894.81x = 2,615.53 × 1,187.45
  4. Step 4: Simplify right side
    1,894.81x = 3,105,811.10
  5. Step 5: Solve for x
    x = 3,105,811.10/1,894.81
  6. Step 6: Final answer
    x = 1,639.11

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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.