Home / 3,130.34-4,319.57-1,871.15

Finding the Fourth Proportional to 3,130.34, 4,319.57 and 1,871.15

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Solution

The fourth proportional to 3,130.34, 4,319.57 and 1,871.15 is: 2,582.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.34 : 4,319.57 = 1,871.15 : x
  2. Step 2: Convert to fraction form
    3,130.34/4,319.57 = 1,871.15/x
  3. Step 3: Cross multiply
    3,130.34x = 4,319.57 × 1,871.15
  4. Step 4: Simplify right side
    3,130.34x = 8,082,541.81
  5. Step 5: Solve for x
    x = 8,082,541.81/3,130.34
  6. Step 6: Final answer
    x = 2,582.00

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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.