Home / 6,981.86-10,430.35-4,991.69

Finding the Fourth Proportional to 6,981.86, 10,430.35 and 4,991.69

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Solution

The fourth proportional to 6,981.86, 10,430.35 and 4,991.69 is: 7,457.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.86 : 10,430.35 = 4,991.69 : x
  2. Step 2: Convert to fraction form
    6,981.86/10,430.35 = 4,991.69/x
  3. Step 3: Cross multiply
    6,981.86x = 10,430.35 × 4,991.69
  4. Step 4: Simplify right side
    6,981.86x = 52,065,073.79
  5. Step 5: Solve for x
    x = 52,065,073.79/6,981.86
  6. Step 6: Final answer
    x = 7,457.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.