Home / 1,954.07-2,931.54-655.50

Finding the Fourth Proportional to 1,954.07, 2,931.54 and 655.50

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Solution

The fourth proportional to 1,954.07, 2,931.54 and 655.50 is: 983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.07 : 2,931.54 = 655.50 : x
  2. Step 2: Convert to fraction form
    1,954.07/2,931.54 = 655.50/x
  3. Step 3: Cross multiply
    1,954.07x = 2,931.54 × 655.50
  4. Step 4: Simplify right side
    1,954.07x = 1,921,624.47
  5. Step 5: Solve for x
    x = 1,921,624.47/1,954.07
  6. Step 6: Final answer
    x = 983.40

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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.