Home / 1,319.19-1,966.76-1,285.53

Finding the Fourth Proportional to 1,319.19, 1,966.76 and 1,285.53

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Solution

The fourth proportional to 1,319.19, 1,966.76 and 1,285.53 is: 1,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.19 : 1,966.76 = 1,285.53 : x
  2. Step 2: Convert to fraction form
    1,319.19/1,966.76 = 1,285.53/x
  3. Step 3: Cross multiply
    1,319.19x = 1,966.76 × 1,285.53
  4. Step 4: Simplify right side
    1,319.19x = 2,528,328.98
  5. Step 5: Solve for x
    x = 2,528,328.98/1,319.19
  6. Step 6: Final answer
    x = 1,916.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.