Home / 1,931.63-2,665.64-1,047.42

Finding the Fourth Proportional to 1,931.63, 2,665.64 and 1,047.42

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Solution

The fourth proportional to 1,931.63, 2,665.64 and 1,047.42 is: 1,445.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.63 : 2,665.64 = 1,047.42 : x
  2. Step 2: Convert to fraction form
    1,931.63/2,665.64 = 1,047.42/x
  3. Step 3: Cross multiply
    1,931.63x = 2,665.64 × 1,047.42
  4. Step 4: Simplify right side
    1,931.63x = 2,792,039.41
  5. Step 5: Solve for x
    x = 2,792,039.41/1,931.63
  6. Step 6: Final answer
    x = 1,445.44

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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.