Home / 1,570.14-2,165.02-1,285.67

Finding the Fourth Proportional to 1,570.14, 2,165.02 and 1,285.67

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Solution

The fourth proportional to 1,570.14, 2,165.02 and 1,285.67 is: 1,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.14 : 2,165.02 = 1,285.67 : x
  2. Step 2: Convert to fraction form
    1,570.14/2,165.02 = 1,285.67/x
  3. Step 3: Cross multiply
    1,570.14x = 2,165.02 × 1,285.67
  4. Step 4: Simplify right side
    1,570.14x = 2,783,484.01
  5. Step 5: Solve for x
    x = 2,783,484.01/1,570.14
  6. Step 6: Final answer
    x = 1,772.77

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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.