Home / 7,140.48-9,858.24-5,654.40

Finding the Fourth Proportional to 7,140.48, 9,858.24 and 5,654.40

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Solution

The fourth proportional to 7,140.48, 9,858.24 and 5,654.40 is: 7,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.48 : 9,858.24 = 5,654.40 : x
  2. Step 2: Convert to fraction form
    7,140.48/9,858.24 = 5,654.40/x
  3. Step 3: Cross multiply
    7,140.48x = 9,858.24 × 5,654.40
  4. Step 4: Simplify right side
    7,140.48x = 55,742,432.26
  5. Step 5: Solve for x
    x = 55,742,432.26/7,140.48
  6. Step 6: Final answer
    x = 7,806.54

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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.