Home / 10,457.90-15,688.76-3,438.30

Finding the Fourth Proportional to 10,457.90, 15,688.76 and 3,438.30

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Solution

The fourth proportional to 10,457.90, 15,688.76 and 3,438.30 is: 5,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,457.90 : 15,688.76 = 3,438.30 : x
  2. Step 2: Convert to fraction form
    10,457.90/15,688.76 = 3,438.30/x
  3. Step 3: Cross multiply
    10,457.90x = 15,688.76 × 3,438.30
  4. Step 4: Simplify right side
    10,457.90x = 53,942,646.32
  5. Step 5: Solve for x
    x = 53,942,646.32/10,457.90
  6. Step 6: Final answer
    x = 5,158.08

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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.