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Finding the Fourth Proportional to 4,690.65, 7,036.80 and 1,570.80

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Solution

The fourth proportional to 4,690.65, 7,036.80 and 1,570.80 is: 2,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,690.65 : 7,036.80 = 1,570.80 : x
  2. Step 2: Convert to fraction form
    4,690.65/7,036.80 = 1,570.80/x
  3. Step 3: Cross multiply
    4,690.65x = 7,036.80 × 1,570.80
  4. Step 4: Simplify right side
    4,690.65x = 11,053,405.44
  5. Step 5: Solve for x
    x = 11,053,405.44/4,690.65
  6. Step 6: Final answer
    x = 2,356.48

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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.