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Finding the Fourth Proportional to 1,955.76, 2,699.16 and 1,116.67

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Solution

The fourth proportional to 1,955.76, 2,699.16 and 1,116.67 is: 1,541.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.76 : 2,699.16 = 1,116.67 : x
  2. Step 2: Convert to fraction form
    1,955.76/2,699.16 = 1,116.67/x
  3. Step 3: Cross multiply
    1,955.76x = 2,699.16 × 1,116.67
  4. Step 4: Simplify right side
    1,955.76x = 3,014,071.00
  5. Step 5: Solve for x
    x = 3,014,071.00/1,955.76
  6. Step 6: Final answer
    x = 1,541.13

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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.