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Finding the Fourth Proportional to 4,689.03, 7,030.95 and 1,917.65

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Solution

The fourth proportional to 4,689.03, 7,030.95 and 1,917.65 is: 2,875.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.03 : 7,030.95 = 1,917.65 : x
  2. Step 2: Convert to fraction form
    4,689.03/7,030.95 = 1,917.65/x
  3. Step 3: Cross multiply
    4,689.03x = 7,030.95 × 1,917.65
  4. Step 4: Simplify right side
    4,689.03x = 13,482,915.18
  5. Step 5: Solve for x
    x = 13,482,915.18/4,689.03
  6. Step 6: Final answer
    x = 2,875.42

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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.