Home / 1,885.73-2,602.58-1,139.80

Finding the Fourth Proportional to 1,885.73, 2,602.58 and 1,139.80

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Solution

The fourth proportional to 1,885.73, 2,602.58 and 1,139.80 is: 1,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.73 : 2,602.58 = 1,139.80 : x
  2. Step 2: Convert to fraction form
    1,885.73/2,602.58 = 1,139.80/x
  3. Step 3: Cross multiply
    1,885.73x = 2,602.58 × 1,139.80
  4. Step 4: Simplify right side
    1,885.73x = 2,966,420.68
  5. Step 5: Solve for x
    x = 2,966,420.68/1,885.73
  6. Step 6: Final answer
    x = 1,573.09

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1.5x scale

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.