Home / 7,030.60-9,702.88-3,887.40

Finding the Fourth Proportional to 7,030.60, 9,702.88 and 3,887.40

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Solution

The fourth proportional to 7,030.60, 9,702.88 and 3,887.40 is: 5,364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030.60 : 9,702.88 = 3,887.40 : x
  2. Step 2: Convert to fraction form
    7,030.60/9,702.88 = 3,887.40/x
  3. Step 3: Cross multiply
    7,030.60x = 9,702.88 × 3,887.40
  4. Step 4: Simplify right side
    7,030.60x = 37,718,975.71
  5. Step 5: Solve for x
    x = 37,718,975.71/7,030.60
  6. Step 6: Final answer
    x = 5,364.97

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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.