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Finding the Fourth Proportional to 5,783.35, 7,981.05 and 3,130.76

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Solution

The fourth proportional to 5,783.35, 7,981.05 and 3,130.76 is: 4,320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.35 : 7,981.05 = 3,130.76 : x
  2. Step 2: Convert to fraction form
    5,783.35/7,981.05 = 3,130.76/x
  3. Step 3: Cross multiply
    5,783.35x = 7,981.05 × 3,130.76
  4. Step 4: Simplify right side
    5,783.35x = 24,986,752.10
  5. Step 5: Solve for x
    x = 24,986,752.10/5,783.35
  6. Step 6: Final answer
    x = 4,320.46

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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.