Home / 2,124.60-2,931.87-1,180.45

Finding the Fourth Proportional to 2,124.60, 2,931.87 and 1,180.45

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Solution

The fourth proportional to 2,124.60, 2,931.87 and 1,180.45 is: 1,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.60 : 2,931.87 = 1,180.45 : x
  2. Step 2: Convert to fraction form
    2,124.60/2,931.87 = 1,180.45/x
  3. Step 3: Cross multiply
    2,124.60x = 2,931.87 × 1,180.45
  4. Step 4: Simplify right side
    2,124.60x = 3,460,927.39
  5. Step 5: Solve for x
    x = 3,460,927.39/2,124.60
  6. Step 6: Final answer
    x = 1,628.98

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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.