Home / 7,931.40-10,941.90-4,785.78

Finding the Fourth Proportional to 7,931.40, 10,941.90 and 4,785.78

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Solution

The fourth proportional to 7,931.40, 10,941.90 and 4,785.78 is: 6,602.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.40 : 10,941.90 = 4,785.78 : x
  2. Step 2: Convert to fraction form
    7,931.40/10,941.90 = 4,785.78/x
  3. Step 3: Cross multiply
    7,931.40x = 10,941.90 × 4,785.78
  4. Step 4: Simplify right side
    7,931.40x = 52,365,526.18
  5. Step 5: Solve for x
    x = 52,365,526.18/7,931.40
  6. Step 6: Final answer
    x = 6,602.31

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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.