Home / 7,780.21-10,724.14-5,261.40

Finding the Fourth Proportional to 7,780.21, 10,724.14 and 5,261.40

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Solution

The fourth proportional to 7,780.21, 10,724.14 and 5,261.40 is: 7,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.21 : 10,724.14 = 5,261.40 : x
  2. Step 2: Convert to fraction form
    7,780.21/10,724.14 = 5,261.40/x
  3. Step 3: Cross multiply
    7,780.21x = 10,724.14 × 5,261.40
  4. Step 4: Simplify right side
    7,780.21x = 56,423,967.18
  5. Step 5: Solve for x
    x = 56,423,967.18/7,780.21
  6. Step 6: Final answer
    x = 7,252.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.