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Finding the Fourth Proportional to 3,038.78, 4,558.18 and 1,307

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Solution

The fourth proportional to 3,038.78, 4,558.18 and 1,307 is: 1,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.78 : 4,558.18 = 1,307 : x
  2. Step 2: Convert to fraction form
    3,038.78/4,558.18 = 1,307/x
  3. Step 3: Cross multiply
    3,038.78x = 4,558.18 × 1,307
  4. Step 4: Simplify right side
    3,038.78x = 5,957,541.26
  5. Step 5: Solve for x
    x = 5,957,541.26/3,038.78
  6. Step 6: Final answer
    x = 1,960.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.