Home / 5,133.40-7,700.10-4,931.80

Finding the Fourth Proportional to 5,133.40, 7,700.10 and 4,931.80

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Solution

The fourth proportional to 5,133.40, 7,700.10 and 4,931.80 is: 7,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,133.40 : 7,700.10 = 4,931.80 : x
  2. Step 2: Convert to fraction form
    5,133.40/7,700.10 = 4,931.80/x
  3. Step 3: Cross multiply
    5,133.40x = 7,700.10 × 4,931.80
  4. Step 4: Simplify right side
    5,133.40x = 37,975,353.18
  5. Step 5: Solve for x
    x = 37,975,353.18/5,133.40
  6. Step 6: Final answer
    x = 7,397.70

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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.