Home / 7,911.81-10,917.59-4,374.81

Finding the Fourth Proportional to 7,911.81, 10,917.59 and 4,374.81

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Solution

The fourth proportional to 7,911.81, 10,917.59 and 4,374.81 is: 6,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.81 : 10,917.59 = 4,374.81 : x
  2. Step 2: Convert to fraction form
    7,911.81/10,917.59 = 4,374.81/x
  3. Step 3: Cross multiply
    7,911.81x = 10,917.59 × 4,374.81
  4. Step 4: Simplify right side
    7,911.81x = 47,762,360.03
  5. Step 5: Solve for x
    x = 47,762,360.03/7,911.81
  6. Step 6: Final answer
    x = 6,036.84

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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.