Home / 1,760.40-2,430.36-1,264.32

Finding the Fourth Proportional to 1,760.40, 2,430.36 and 1,264.32

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Solution

The fourth proportional to 1,760.40, 2,430.36 and 1,264.32 is: 1,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.40 : 2,430.36 = 1,264.32 : x
  2. Step 2: Convert to fraction form
    1,760.40/2,430.36 = 1,264.32/x
  3. Step 3: Cross multiply
    1,760.40x = 2,430.36 × 1,264.32
  4. Step 4: Simplify right side
    1,760.40x = 3,072,752.76
  5. Step 5: Solve for x
    x = 3,072,752.76/1,760.40
  6. Step 6: Final answer
    x = 1,745.49

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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.