Home / 1,895.60-2,615.74-1,139.60

Finding the Fourth Proportional to 1,895.60, 2,615.74 and 1,139.60

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Solution

The fourth proportional to 1,895.60, 2,615.74 and 1,139.60 is: 1,572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.60 : 2,615.74 = 1,139.60 : x
  2. Step 2: Convert to fraction form
    1,895.60/2,615.74 = 1,139.60/x
  3. Step 3: Cross multiply
    1,895.60x = 2,615.74 × 1,139.60
  4. Step 4: Simplify right side
    1,895.60x = 2,980,881.38
  5. Step 5: Solve for x
    x = 2,980,881.38/1,895.60
  6. Step 6: Final answer
    x = 1,572.53

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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.