Home / 4,709.10-7,062.30-1,421.40

Finding the Fourth Proportional to 4,709.10, 7,062.30 and 1,421.40

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Solution

The fourth proportional to 4,709.10, 7,062.30 and 1,421.40 is: 2,131.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,709.10 : 7,062.30 = 1,421.40 : x
  2. Step 2: Convert to fraction form
    4,709.10/7,062.30 = 1,421.40/x
  3. Step 3: Cross multiply
    4,709.10x = 7,062.30 × 1,421.40
  4. Step 4: Simplify right side
    4,709.10x = 10,038,353.22
  5. Step 5: Solve for x
    x = 10,038,353.22/4,709.10
  6. Step 6: Final answer
    x = 2,131.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.