Home / 1,761.48-2,430.86-964.80

Finding the Fourth Proportional to 1,761.48, 2,430.86 and 964.80

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Solution

The fourth proportional to 1,761.48, 2,430.86 and 964.80 is: 1,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.48 : 2,430.86 = 964.80 : x
  2. Step 2: Convert to fraction form
    1,761.48/2,430.86 = 964.80/x
  3. Step 3: Cross multiply
    1,761.48x = 2,430.86 × 964.80
  4. Step 4: Simplify right side
    1,761.48x = 2,345,276.75
  5. Step 5: Solve for x
    x = 2,345,276.75/1,761.48
  6. Step 6: Final answer
    x = 1,331.42

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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.