Home / 7,814.40-10,784.73-4,981.88

Finding the Fourth Proportional to 7,814.40, 10,784.73 and 4,981.88

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Solution

The fourth proportional to 7,814.40, 10,784.73 and 4,981.88 is: 6,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.40 : 10,784.73 = 4,981.88 : x
  2. Step 2: Convert to fraction form
    7,814.40/10,784.73 = 4,981.88/x
  3. Step 3: Cross multiply
    7,814.40x = 10,784.73 × 4,981.88
  4. Step 4: Simplify right side
    7,814.40x = 53,728,176.77
  5. Step 5: Solve for x
    x = 53,728,176.77/7,814.40
  6. Step 6: Final answer
    x = 6,875.53

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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.