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Finding the Fourth Proportional to 5,320.64, 7,980.91 and 2,398.95

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Solution

The fourth proportional to 5,320.64, 7,980.91 and 2,398.95 is: 3,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.64 : 7,980.91 = 2,398.95 : x
  2. Step 2: Convert to fraction form
    5,320.64/7,980.91 = 2,398.95/x
  3. Step 3: Cross multiply
    5,320.64x = 7,980.91 × 2,398.95
  4. Step 4: Simplify right side
    5,320.64x = 19,145,798.05
  5. Step 5: Solve for x
    x = 19,145,798.05/5,320.64
  6. Step 6: Final answer
    x = 3,598.40

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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.