Home / 7,875.81-10,868.36-4,339.08

Finding the Fourth Proportional to 7,875.81, 10,868.36 and 4,339.08

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Solution

The fourth proportional to 7,875.81, 10,868.36 and 4,339.08 is: 5,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.81 : 10,868.36 = 4,339.08 : x
  2. Step 2: Convert to fraction form
    7,875.81/10,868.36 = 4,339.08/x
  3. Step 3: Cross multiply
    7,875.81x = 10,868.36 × 4,339.08
  4. Step 4: Simplify right side
    7,875.81x = 47,158,661.81
  5. Step 5: Solve for x
    x = 47,158,661.81/7,875.81
  6. Step 6: Final answer
    x = 5,987.79

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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.