Home / 7,931.42-10,934.70-6,807.50

Finding the Fourth Proportional to 7,931.42, 10,934.70 and 6,807.50

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Solution

The fourth proportional to 7,931.42, 10,934.70 and 6,807.50 is: 9,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.42 : 10,934.70 = 6,807.50 : x
  2. Step 2: Convert to fraction form
    7,931.42/10,934.70 = 6,807.50/x
  3. Step 3: Cross multiply
    7,931.42x = 10,934.70 × 6,807.50
  4. Step 4: Simplify right side
    7,931.42x = 74,437,970.25
  5. Step 5: Solve for x
    x = 74,437,970.25/7,931.42
  6. Step 6: Final answer
    x = 9,385.20

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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.