Home / 1,506.45-2,078.55-916.98

Finding the Fourth Proportional to 1,506.45, 2,078.55 and 916.98

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Solution

The fourth proportional to 1,506.45, 2,078.55 and 916.98 is: 1,265.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.45 : 2,078.55 = 916.98 : x
  2. Step 2: Convert to fraction form
    1,506.45/2,078.55 = 916.98/x
  3. Step 3: Cross multiply
    1,506.45x = 2,078.55 × 916.98
  4. Step 4: Simplify right side
    1,506.45x = 1,905,988.78
  5. Step 5: Solve for x
    x = 1,905,988.78/1,506.45
  6. Step 6: Final answer
    x = 1,265.22

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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.