Home / 1,761.49-2,430.66-975.34

Finding the Fourth Proportional to 1,761.49, 2,430.66 and 975.34

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Solution

The fourth proportional to 1,761.49, 2,430.66 and 975.34 is: 1,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.49 : 2,430.66 = 975.34 : x
  2. Step 2: Convert to fraction form
    1,761.49/2,430.66 = 975.34/x
  3. Step 3: Cross multiply
    1,761.49x = 2,430.66 × 975.34
  4. Step 4: Simplify right side
    1,761.49x = 2,370,719.92
  5. Step 5: Solve for x
    x = 2,370,719.92/1,761.49
  6. Step 6: Final answer
    x = 1,345.86

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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.