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Finding the Fourth Proportional to 4,762.95, 7,140.18 and 2,421.65

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Solution

The fourth proportional to 4,762.95, 7,140.18 and 2,421.65 is: 3,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762.95 : 7,140.18 = 2,421.65 : x
  2. Step 2: Convert to fraction form
    4,762.95/7,140.18 = 2,421.65/x
  3. Step 3: Cross multiply
    4,762.95x = 7,140.18 × 2,421.65
  4. Step 4: Simplify right side
    4,762.95x = 17,290,983.23
  5. Step 5: Solve for x
    x = 17,290,983.23/4,762.95
  6. Step 6: Final answer
    x = 3,630.31

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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.