Home / 9,771.20-14,649.60-6,643.40

Finding the Fourth Proportional to 9,771.20, 14,649.60 and 6,643.40

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Solution

The fourth proportional to 9,771.20, 14,649.60 and 6,643.40 is: 9,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,771.20 : 14,649.60 = 6,643.40 : x
  2. Step 2: Convert to fraction form
    9,771.20/14,649.60 = 6,643.40/x
  3. Step 3: Cross multiply
    9,771.20x = 14,649.60 × 6,643.40
  4. Step 4: Simplify right side
    9,771.20x = 97,323,152.64
  5. Step 5: Solve for x
    x = 97,323,152.64/9,771.20
  6. Step 6: Final answer
    x = 9,960.20

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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.