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Finding the Fourth Proportional to 1,760.85, 2,430.12 and 1,015.05

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Solution

The fourth proportional to 1,760.85, 2,430.12 and 1,015.05 is: 1,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.85 : 2,430.12 = 1,015.05 : x
  2. Step 2: Convert to fraction form
    1,760.85/2,430.12 = 1,015.05/x
  3. Step 3: Cross multiply
    1,760.85x = 2,430.12 × 1,015.05
  4. Step 4: Simplify right side
    1,760.85x = 2,466,693.31
  5. Step 5: Solve for x
    x = 2,466,693.31/1,760.85
  6. Step 6: Final answer
    x = 1,400.85

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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.