Home / 1,717.75-2,370.60-971.78

Finding the Fourth Proportional to 1,717.75, 2,370.60 and 971.78

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Solution

The fourth proportional to 1,717.75, 2,370.60 and 971.78 is: 1,341.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.75 : 2,370.60 = 971.78 : x
  2. Step 2: Convert to fraction form
    1,717.75/2,370.60 = 971.78/x
  3. Step 3: Cross multiply
    1,717.75x = 2,370.60 × 971.78
  4. Step 4: Simplify right side
    1,717.75x = 2,303,701.67
  5. Step 5: Solve for x
    x = 2,303,701.67/1,717.75
  6. Step 6: Final answer
    x = 1,341.12

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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.